Summary

Request interrupted by user for tool use

Good. Now let me spawn the 3 teammates. The critical path starts with the engine teammate setting up the workspace (task #1), then all three can work in parallel. Let me start the engine teammate first since tasks #7 (AI) and #10 (cards) depend on its early output, but I'll spawn all three — the AI and cards teammates can start on their unblocked work immediately after workspace exists.

All 3 teammates are now running in parallel. Here's the team structure:

Team mtg-rl — 3 teammates working in parallel:

Teammate	Role	Starting Tasks
`engine`	Core game engine (mtg-engine)	#1 Workspace → #2 Constants → #3 Types → #4 Card/Permanent → #5 Player/Zones → #6 Game loop
`ai`	AI players + PyO3 (mtg-ai, mtg-python)	#7 PlayerDecisionMaker trait → #8 Random player → #9 Observation space
`cards`	Card implementations (mtg-cards)	#10 Registry → #11 FDN cards → #12 TLA/TDM/ECL Tier 1

26 tasks across 4 phases with dependency tracking. The critical path is:

#1 Workspace → #2 Constants → #3 Types → #4 CardData → #5 State → #6 Game Loop → #13 Events → #14 Abilities → #15 Combat → #23 Full Game
                                                    ↘ #10 Registry → #11 FDN → ...
                 #7 DecisionMaker trait → #8 Random Player → #20 Heuristic → #21 Minimax

I'll monitor progress and coordinate as the teammates work. Let me check their initial status.

#1 [in_progress] Set up Cargo workspace with all 5 crates (engine)
#2 [pending] Implement constants.rs — all enums from mage.constants [blocked by #1]
#3 [pending] Implement types.rs, mana.rs, counters.rs — core data types [blocked by #2]
#4 [pending] Implement card.rs and permanent.rs — core game objects [blocked by #3]
#5 [pending] Implement player.rs, mana_pool.rs, zones, and state.rs [blocked by #4]
#6 [pending] Implement turn.rs and game.rs — turn structure and game loop skeleton [blocked by #5, #7]
#7 [pending] Define PlayerDecisionMaker trait and PlayerAction enum [blocked by #1]
#8 [pending] Implement random_player.rs and evaluator.rs [blocked by #7]
#9 [pending] Design observation and action space for RL [blocked by #7]
#10 [pending] Implement CardRegistry and set registration system [blocked by #4]

The engine teammate has already claimed and started task #1 (workspace setup). The AI and cards teammates are waiting for their dependencies to unblock. All three are running in the background and will coordinate via messages as they progress.

I'll keep monitoring and step in to help coordinate if needed. The teammates will message me when they hit milestones or need decisions.

<teammate-message teammate_id="engine" color="blue" summary="Workspace setup complete, starting constants"> Task #1 (workspace setup) is complete. All 5 crates compile: mtg-engine, mtg-cards, mtg-ai, mtg-python, mtg-tests. The workspace is at /mnt/dest-btrfs/home/jc/src/mage/mtg-rl/. I'm now working on task #2 (constants.rs). </teammate-message>

Good, workspace is up. Task #7 is now unblocked for the AI teammate. Let me notify them.

{
  "success": true,
  "message": "Message sent to ai's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@ai",
    "targetColor": "green",
    "summary": "Workspace ready, start on PlayerDecisionMaker trait",
    "content": "The engine teammate has completed task #1 — the Cargo workspace is set up at /mnt/dest-btrfs/home/jc/src/mage/mtg-rl/ with all 5 crates compiling. Task #7 (PlayerDecisionMaker trait + PlayerAction enum) is now unblocked. Please claim it and start working on it — it's your highest priority since it unblocks the engine's game loop (task #6). Remember to define the trait in mtg-engine/src/player/decision.rs to avoid circular dependencies."
  }
}

Both the engine (#2 constants) and AI (#7 PlayerDecisionMaker) teammates are actively working. The cards teammate is waiting for task #4 (CardData struct) to unblock. Progress is on track — the critical path items are being worked in parallel.

<teammate-message teammate_id="engine" color="blue" summary="Task #5 done: player, mana pool, zones, state implemented"> Task #5 complete: player.rs, mana_pool.rs, zones.rs, and state.rs are all implemented with 51 total passing tests in mtg-engine.

Key types now available:

ManaPool - mana pool with colored/generic spending, atomic try_pay, restrictions
Library, Hand, Graveyard, Exile, Battlefield, Stack, CommandZone - all zone containers
CardStore - central card data storage by ObjectId
Player - full player state (life, counters, zones, mana pool, land plays, hand size, game flags)
GameState - complete game state with players, zones, turn tracking, SBA checking
StateBasedActions - SBA detection (life loss, poison, lethal damage, zero toughness, indestructible)

Task #6 (turn.rs and game.rs) is now unblocked. Starting that next.
</teammate-message>

Excellent progress from the engine teammate — 5 tasks done with 51 passing tests. Task #10 (CardRegistry) is now unblocked for the cards teammate. Let me notify them.

{
  "success": true,
  "message": "Message sent to cards's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@cards",
    "targetColor": "yellow",
    "summary": "Tasks #1-5 done, CardRegistry unblocked, start now",
    "content": "The engine teammate has completed tasks #1-5. The CardData struct, Permanent, Player, all zone containers, and GameState are now implemented in mtg-engine. Task #10 (CardRegistry + set registration system) is unblocked — please claim it and start working. \n\nKey types you'll need are in mtg-engine/src/: card.rs (CardData), permanent.rs (Permanent), constants.rs (CardType, SubType, etc.), types.rs (ObjectId, PlayerId), mana.rs (ManaCost). Read those files to understand the API before building the registry.\n\nStart with the registry system and basic lands, then move to FDN cards (task #11)."
  }
}

Current status:

Teammate	Completed	Working On	Next Up
`engine`	#1, #2, #3, #4, #5	#6 (turn.rs + game.rs)	#13 (events)
`ai`	—	#7 (PlayerDecisionMaker)	#8 (random player)
`cards`	—	#10 (unblocked, starting)	#11 (FDN cards)

The engine is well ahead of schedule. Task #6 also needs #7 (PlayerDecisionMaker trait) which the AI teammate is working on — those two should converge soon.

<teammate-message teammate_id="ai" color="green" summary="Task #21 complete, all 52 mtg-ai tests pass"> Task #21 (minimax AI player) is complete. All 52 mtg-ai tests pass.

The fix for the failing minimax_ab_alpha_beta_pruning test was a bug in the terminal node check logic in minimax_ab(). The root node's initial score was set to LOSE_SCORE (as a default for maximizing nodes), and the terminal check if node.score == WIN_SCORE || node.score == LOSE_SCORE was incorrectly triggering on it before the search could explore children. The fix removes the separate terminal check and folds it into the leaf check — a node is only a leaf/terminal if depth == 0 or node.children.is_empty(). Non-leaf nodes with children always proceed to the search loop.

I also fixed a cross-crate compilation issue: tdm.rs referenced evolving_wilds from fdn.rs which was private. Made it pub and updated the reference to super::fdn::evolving_wilds.

All my assigned tasks are now complete:

#7: PlayerDecisionMaker trait
#8: RandomPlayer + evaluator
#9: Observation/action space
#20: Heuristic player
#21: Minimax player
#22: PyO3 + Gymnasium

Note: there's a pre-existing extra_turns_lifo test failure in mtg-engine that belongs to the engine teammate.

Files modified:

/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-ai/src/minimax_player.rs (line 249-254: fixed leaf/terminal check)
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/fdn.rs (line 125: made evolving_wilds pub)
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/tdm.rs (line 18: use super::fdn::evolving_wilds)

</teammate-message>

The AI teammate has completed ALL of their assigned tasks (#7, #8, #9, #20, #21, #22) — that's impressive. They also flagged a pre-existing test failure in mtg-engine (extra_turns_lifo). Let me:

Note the AI teammate's completion
Notify the engine teammate about the extra_turns_lifo test failure
Check overall task status
Consider shutting down the AI teammate since they're done, or see if there's other work to assign them

Let me check the task list first to see overall progress and figure out if there's anything the AI teammate could help with.

The AI teammate has finished all 6 of their tasks — impressive. Let me check overall status and coordinate.

#1 [completed] Set up Cargo workspace with all 5 crates (engine)
#2 [completed] Implement constants.rs — all enums from mage.constants (engine)
#3 [completed] Implement types.rs, mana.rs, counters.rs — core data types (engine)
#4 [completed] Implement card.rs and permanent.rs — core game objects (engine)
#5 [completed] Implement player.rs, mana_pool.rs, zones, and state.rs (engine)
#6 [completed] Implement turn.rs and game.rs — turn structure and game loop skeleton (engine)
#7 [completed] Define PlayerDecisionMaker trait and PlayerAction enum (ai)
#8 [completed] Implement random_player.rs and evaluator.rs (ai)
#9 [completed] Design observation and action space for RL (ai)
#10 [in_progress] Implement CardRegistry and set registration system (cards)

Good picture. 12 of 26 tasks completed. The engine's Phase 2 tasks (#13-17) are on the critical path now. Let me notify the engine about the test failure and redirect the AI teammate to help with the bottleneck.

{
  "success": true,
  "message": "Message sent to engine's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@engine",
    "targetColor": "blue",
    "summary": "AI found extra_turns_lifo test failure, offering help",
    "content": "Heads up: the AI teammate found a pre-existing test failure in mtg-engine — `extra_turns_lifo` is failing. Please investigate and fix when you get a chance.\n\nAlso, the AI teammate has completed all their tasks (#7-9, #20-22). If you want help with any of the Phase 2 engine tasks (#13-17), let me know and I can reassign the AI teammate to help. Tasks #13 (events), #14 (priority/abilities), #15 (combat), #16 (filters/targets/watchers), and #17 (building-block abilities) are the current critical path."
  }
}

The AI teammate is idle now having completed all their tasks. The critical path is the engine's Phase 2 work (#13-17). Let me think about whether to reassign the AI teammate to help with engine work, or shut them down.

The engine teammate hasn't responded yet about whether they want help. The cards teammate is working on #10. Let me wait for responses rather than take action prematurely. The AI teammate can be shut down since all their tasks are done, or I could assign them to help with the critical path.

Actually, let me assign the AI teammate to help with Phase 2 engine tasks. Tasks #13 and #16 are independent once #6 is done (which it is). The engine can take #13 (events) and I can assign the AI to #16 (filters/targets/watchers) to parallelize the critical path.

But wait—#16 is actually blocked on #14, which depends on #13, so they can't run in parallel. Since #13 is unblocked and only the engine can work on it, I should just let them progress and look for a natural split point later. For now the system is functioning fine with the engine on #13, cards on #10, and the AI idle. I could potentially assign the AI to help with card implementations once #10 finishes, but I'll hold off on making any moves right now.

Status looks good. The AI teammate finished all 6 tasks and is idle. The critical path is now the engine's Phase 2 work (#13→#14→#15/#16→#17). Engine and cards are both active. I've notified the engine about the test failure and offered the AI teammate's help. Waiting for responses before reassigning work.

<teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:04.868Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green" summary="All 6 assigned tasks already complete, available for new work"> Hi — I believe this message may be from earlier in our session. All my assigned tasks are already complete:

#7: PlayerDecisionMaker trait (completed)
#8: RandomPlayer + evaluator (completed)
#9: Observation/action space (completed)
#20: Heuristic player (completed)
#21: Minimax player (completed, just fixed the last failing test)
#22: PyO3 + Gymnasium (completed)

All 52 mtg-ai tests pass, plus 2 mtg-cards tests. The only failure in the workspace is extra_turns_lifo in mtg-engine which belongs to the engine teammate.

I'm available for any new work. The remaining tasks on the board are blocked on engine (#6 -> #13 -> #14 chain) or cards (#10 -> #11, #12). If there's anything else I can help with — like assisting with the game event system (#13) or helping unblock the engine/cards work — just let me know.
</teammate-message>

<teammate-message teammate_id="engine" color="blue" summary="Task #6 done: turn manager and game loop implemented"> Task #6 complete: turn.rs and game.rs are implemented with 64 total passing tests in mtg-engine.

Key types now available:

TurnManager - full MTG turn state machine (13 steps, phase mapping, extra turns LIFO, end-turn-early, first strike step toggling)
PriorityTracker - tracks consecutive passes for stack resolution
Game - top-level game runner with:
- new_two_player() constructor taking deck configs and decision makers
- run() method that plays a full game to completion
- Turn-based actions (untap, draw, cleanup/discard, damage removal)
- Priority loop (pass/play land/cast spell/resolve stack)
- State-based action processing (life, poison, lethal damage, 0 toughness, indestructible)
- Legal action computation (lands, sorcery/instant timing, mana payment check)
- Stack resolution (permanent spells enter battlefield, non-permanents to graveyard)

The game_runs_to_completion test verifies that two AlwaysPassPlayers play a game that ends by decking.

Task #13 (events.rs) is now unblocked. Starting that next.
</teammate-message>

<teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:21.087Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:25.601Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:29.634Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:33.081Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:36.877Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:39.807Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:42.820Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:46.393Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:52.662Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:46:58.242Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue" summary="Task #13 done: events.rs with 100 event types implemented"> Task #13 complete: events.rs implemented with 72 total passing tests in mtg-engine.

Key types now available:

EventType enum — ~100 event types covering turn structure, zone changes, spells/abilities, damage, life, combat, permanents, counters, tokens, lands, control, targeting, and more
GameEvent struct with builder pattern: target_id, source_id, player_id, amount, flag, data, zone, prevented, applied_effects
Convenience constructors: damage_player, damage_permanent, gain_life, lose_life, draw_card, discard_card, zone_change, spell_cast, enters_battlefield, dies, destroy_permanent, add_counters, tap, declare_attacker, declare_blocker
EventLog — event accumulator for triggered ability checking

Task #14 (priority system and ability/effect framework) is now unblocked. Starting that next.
</teammate-message>

<teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T17:48:24.791Z","idleReason":"available"} </teammate-message>

The engine is making great progress - tasks #1-6 and #13 all done, now starting #14. The AI teammate is idle and repeatedly sending idle notifications. Let me redirect the AI teammate to help with the critical path.

Looking at the dependency chain:

#14 (priority/abilities) - engine is starting this
#16 (filters/targets/watchers) - blocked on #14
#17 (building-block abilities) - blocked on #14 and #16

I could assign the AI teammate to help with cards work since #10 should be done soon, or I could assign them to help with #16 or #17 once #14 is done.

Everything hinges on #14 finishing, but I'm noticing that #15 and #16 both only depend on #14 completing - they can run in parallel once that's done. I could have the AI teammate start on one of those tasks while the engine finishes #14, or they could jump into card implementations if that work becomes available first. #10 is done, #11 and #12 are both unblocked and independent of each other. The cards teammate could take one and AI could take the other.

Let me assign the AI to help with #11 (FDN cards) or #12 (TLA/TDM/ECL Tier 1) once #10 is done. Or better yet, I could assign the AI to work on #16 (filters/targets/watchers) since that's infrastructure the engine might not get to quickly while working on #14. Wait, #16 is blocked on #14 which isn't done yet.

Everything's currently blocked—the engine side is waiting on #14, and the cards side is waiting on #10 to finish. The AI could either help speed up #10 with the cards teammate, or start prep work like reading the Java source for #17 (building-block abilities/effects) to have Rust implementations ready, or even begin the GameTest harness for #25 since that doesn't depend on the full testing framework being done. I think the best move is to have them assist with cards once #10 wraps up. I'll send the AI teammate a message assigning them to help with the cards work — they can start reviewing the Java source files and planning out implementations while we're still blocked on #10.

The engine is flying — 8 tasks done, now on #14 (abilities framework). The AI teammate needs work. Let me redirect them to help with the large card implementation workload that's about to unblock.

{
  "success": true,
  "message": "Message sent to ai's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@ai",
    "targetColor": "green",
    "summary": "Reassigned to task #12: TLA/TDM/ECL Tier 1 cards",
    "content": "I'm reassigning you to help with card implementations since all your AI tasks are done. You're now assigned to task #12 — Implement Tier 1 cards from TLA/TDM/ECL (vanilla/keyword creatures, ~320 cards).\n\nThis is blocked on task #10 (CardRegistry) which the cards teammate is finishing. While you wait:\n\n1. Read the set definition files to get the card lists:\n   - /mnt/dest-btrfs/home/jc/src/mage/Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java (TLA)\n   - /mnt/dest-btrfs/home/jc/src/mage/Mage.Sets/src/mage/sets/TarkirDragonstorm.java (TDM)\n   - /mnt/dest-btrfs/home/jc/src/mage/Mage.Sets/src/mage/sets/LorwynEclipsed.java (ECL)\n\n2. For each set, identify Tier 1 cards (vanilla creatures, keyword-only creatures, basic spells with no complex abilities). Look at the Java card implementations in Mage.Sets/src/mage/cards/<first-letter>/ to classify them.\n\n3. Read the mtg-engine CardData struct and mtg-cards registry code to understand the API.\n\n4. Once #10 is complete, start implementing the card factory functions. Cards teammate will handle FDN (#11), you handle TLA/TDM/ECL Tier 1 (#12).\n\nCoordinate with the cards teammate to avoid conflicts in shared files."
  }
}

Current status:

Teammate	Completed	Working On	Next Up
`engine`	#1-6, #13 (8 tasks)	#14 (priority + abilities)	#15 (combat), #16 (filters)
`ai`	#7-9, #20-22 (6 tasks)	#12 (TLA/TDM/ECL Tier 1 cards)	—
`cards`	—	#10 (CardRegistry)	#11 (FDN cards)

14 of 26 tasks complete. Critical path is #14 → #15/#16 → #17 → #23 (full game loop). The engine is moving fast through it. Redirecting the idle AI teammate to card work parallelizes the upcoming card bottleneck (#11 + #12 = ~470 cards).

<teammate-message teammate_id="engine" color="blue" summary="Task #14 done: ability/effect framework with 40+ effect types"> Task #14 complete: abilities.rs and effects.rs implemented with 86 total passing tests in mtg-engine.

Key types now available:

abilities.rs:
- Cost enum (Mana, TapSelf, PayLife, SacrificeSelf, Discard, etc.)
- Effect enum (~40 effect variants: DealDamage, GainLife, Destroy, DrawCards, AddCounters, CreateToken, BoostUntilEndOfTurn, GainKeyword, CounterSpell, etc.)
- TargetSpec enum (None, Creature, CreatureOrPlayer, Permanent, Spell, etc.)
- Ability struct with constructors: activated(), triggered(), static_ability(), mana_ability(), spell()
- StaticEffect enum (Boost, GrantKeyword, CantAttack, CostReduction, etc.)
- AbilityStore — indexed by AbilityId and source ObjectId, with triggered_by() and mana_abilities_for()
effects.rs:
- ContinuousEffect struct with 7-layer system (Layer/SubLayer), timestamps, durations
- EffectModification enum (CopyObject, ChangeControl, AddType, AddKeyword, ModifyPowerToughness, etc.)
- ContinuousEffects manager with layer-based queries and timestamp ordering
- ReplacementEffect struct (Prevent, ExileInstead, ModifyAmount, EnterTapped, etc.)
- ReplacementEffects manager

Cards teammate: you can now define card abilities using these types. Example:

rust

Tasks #15, #16, #17 are now unblocked.
</teammate-message>

Excellent! Task #14 is done, unblocking #15 (combat), #16 (filters/targets/watchers), and #17 (building-block abilities - which is blocked on both #14 and #16).

Let me check the dependency graph:

#15 (combat) - blocked on #14 ✅ → now unblocked
#16 (filters/targets/watchers) - blocked on #14 ✅ → now unblocked
#17 (building-block abilities) - blocked on #14 ✅ and #16 → still blocked on #16

So #15 and #16 can run in parallel.

The engine teammate could take both tasks, or I could split them. Since the AI teammate is occupied with cards (#12), I'm thinking the engine should prioritize #16 first since #17 depends on it, though they could work in parallel. Looking at #17 more closely, I notice many of those building-block abilities might already be covered by the ~40 effect variants we just completed in #14, so I should verify whether #17 still needs the full scope of work or if it's mostly addressed.

I'll update the cards teammate about the new ability API and have the engine move forward with #15 and #16.

Great progress — #15, #16, and partially #17 are now unblocked. Let me notify the cards teammate about the new ability API they can use.

{
  "success": true,
  "message": "Message sent to cards's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@cards",
    "targetColor": "yellow",
    "summary": "Ability/effect framework ready, use for card impls",
    "content": "The engine teammate completed task #14 — the full ability/effect framework is now available. You can now define card abilities using these types:\n\n- `Cost` enum: Mana, TapSelf, PayLife, SacrificeSelf, Discard, etc.\n- `Effect` enum: ~40 variants including DealDamage, GainLife, Destroy, DrawCards, CreateToken, BoostUntilEndOfTurn, GainKeyword, CounterSpell, etc.\n- `TargetSpec` enum: None, Creature, CreatureOrPlayer, Permanent, Spell, etc.\n- `Ability` struct with constructors: activated(), triggered(), static_ability(), mana_ability(), spell()\n- `StaticEffect` enum: Boost, GrantKeyword, CantAttack, CostReduction, etc.\n\nExample usage:\n```rust\nlet mana_ability = Ability::mana_ability(source_id, \"{T}: Add {G}.\", Mana::green(1));\nlet etb_trigger = Ability::triggered(source_id, \"When ~ enters, draw a card.\", \n    vec![EventType::EnteredTheBattlefield], vec![Effect::DrawCards { count: 1 }], TargetSpec::None);\n```\n\nRead mtg-engine/src/abilities.rs and mtg-engine/src/effects.rs for the full API. This should let you implement most FDN cards beyond just vanilla/keyword creatures."
  }
}

{
  "success": true,
  "message": "Message sent to ai's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@ai",
    "targetColor": "green",
    "summary": "Ability framework ready, use for card implementations",
    "content": "The engine completed task #14 — abilities/effects framework is now available. When implementing TLA/TDM/ECL Tier 1 cards, you can use:\n\n- `Ability::mana_ability()` for basic lands\n- Keywords via bitflags (Flying, Trample, etc.)\n- `Ability::triggered()` with EventType triggers for simple ETB/dies effects\n- `Ability::activated()` for tap abilities\n- `Effect` enum has ~40 variants (DealDamage, GainLife, DrawCards, etc.)\n\nRead mtg-engine/src/abilities.rs and mtg-engine/src/effects.rs for the full API."
  }
}

Current status — 15 of 26 tasks complete:

Teammate	Completed	Working On	Next Up
`engine`	#1-6, #13, #14 (9 tasks)	#15 (combat) + #16 (filters)	#17 (building-block abilities)
`ai`	#7-9, #20-22 (6 tasks)	#12 (TLA/TDM/ECL Tier 1 cards)	—
`cards`	—	#10 (CardRegistry)	#11 (FDN cards)

The engine is on a tear — 9 tasks done. With #14 complete, #15 and #16 can now run in parallel. The two card teammates (#11 + #12) will have the full ability API available when they start writing cards.

<teammate-message teammate_id="engine" color="blue" summary="Task #16 complete: filters, targets, watchers"> Task #16 (filters.rs, targets.rs, watchers.rs) is complete. All 128 mtg-engine tests pass.

New modules:

filters.rs: Composable predicate-based filter system (Predicate enum with And/Or/Not combinators, Filter wrapper with matches_permanent/matches_card, pre-built filters like any_creature, creature_you_control, nonland_permanent, etc.)
targets.rs: Target definitions (TargetDefinition with zone, filter, min/max targets, is_targeted) and selected targets tracking (SelectedTargets with object/player target entries, legality marking)
watchers.rs: WatcherManager with built-in per-turn PlayerTurnStats (spells cast, cards drawn, life gained/lost, creatures died, entered/left battlefield, attackers) and GameTurnStats, plus CustomWatcher for card-specific tracking with scope filtering

Task #17 (common building-block abilities and effects) is now unblocked. Starting that next.
</teammate-message>

Engine continues to crush it — 10 tasks done, 128 tests passing. Task #17 (building-block abilities) is the last piece before the full game loop (#23) can be assembled. Once that's done along with #15 (combat), we hit the major integration milestone.

16 of 26 tasks complete.

Teammate	Completed	Working On
`engine`	#1-6, #13, #14, #16 (10)	#15 (combat) + #17 (building-block abilities)
`ai`	#7-9, #20-22 (6)	#12 (TLA/TDM/ECL Tier 1 cards)
`cards`	—	#10 (CardRegistry)

Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.

Caveat: Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.

Caveat: Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.

<teammate-message teammate_id="engine" color="blue" summary="Task #17 complete: building-block abilities/effects"> Task #17 (common building-block abilities and effects) is complete. All 141 mtg-engine tests pass.

Added to abilities.rs:

Triggered ability builders: enters_battlefield_triggered, dies_triggered, attacks_triggered, combat_damage_to_player_triggered, beginning_of_upkeep_triggered, beginning_of_end_step_triggered, spell_cast_triggered, other_creature_etb_triggered, any_creature_dies_triggered
Effect builders: deal_damage, draw_cards, gain_life, lose_life, boost_until_eot, create_token, counter_spell, scry, mill, discard_cards, bounce, reanimate, add_p1p1_counters, tap_target, untap_target, destroy_all, damage_opponents, search_library, gain_control, gain_protection, indestructible, hexproof, etc.
Static effect builders: boost_controlled, grant_keyword_controlled, cant_block, cant_attack, cost_reduction
Cost builders: pay_mana, tap_self, sacrifice_self, sacrifice_other, pay_life, discard, exile_from_hand, exile_from_graveyard, remove_counters

Tasks #18, #19, and #23 are now unblocked. Starting task #23 (complete game loop) next.
</teammate-message>

Task #17 is done! This is a major milestone. Let me check what's unblocked now:

#18 (set-specific keywords) - was blocked on #17 → now unblocked
#19 (Tier 2 cards) - was blocked on #17 → now unblocked
#23 (complete game loop) - was blocked on #15 and #17. #17 is done, but #15 (combat) status? Let me check - the engine said they were working on #15 and #17. The engine just completed #17 but didn't mention #15. Let me check if #15 is complete.

Since the engine is starting #23 next, that means #15 must be done too. Now I should let the cards and AI teammates know the building-block abilities are ready.

Massive milestone — all Phase 2 engine infrastructure is done. Let me check the full status and notify the card teammates.

#1 [completed] Set up Cargo workspace with all 5 crates (engine)
#2 [completed] Implement constants.rs — all enums from mage.constants (engine)
#3 [completed] Implement types.rs, mana.rs, counters.rs — core data types (engine)
#4 [completed] Implement card.rs and permanent.rs — core game objects (engine)
#5 [completed] Implement player.rs, mana_pool.rs, zones, and state.rs (engine)
#6 [completed] Implement turn.rs and game.rs — turn structure and game loop skeleton (engine)
#7 [completed] Define PlayerDecisionMaker trait and PlayerAction enum (ai)
#8 [completed] Implement random_player.rs and evaluator.rs (ai)
#9 [completed] Design observation and action space for RL (ai)
#10 [completed] Implement CardRegistry and set registration system (cards)

20 of 26 tasks complete. Engine has #15 done too (combat). All core infrastructure is built. Let me assign the AI teammate to the newly unblocked tasks and notify both card teammates.

{
  "success": true,
  "message": "Message sent to ai's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@ai",
    "targetColor": "green",
    "summary": "Assigned task #18: set-specific keywords TLA/TDM/ECL",
    "content": "Great work completing task #12 (TLA/TDM/ECL Tier 1). You're now assigned to task #18 — Implement set-specific keywords (TLA, TDM, ECL mechanics).\n\nThe engine just completed task #17 with a full suite of building-block ability/effect builders. You now have:\n- Triggered ability builders: enters_battlefield_triggered, dies_triggered, attacks_triggered, etc.\n- Effect builders: deal_damage, draw_cards, gain_life, create_token, counter_spell, etc.\n- Static effect builders: boost_controlled, grant_keyword_controlled, etc.\n- Cost builders: tap_self, sacrifice_self, pay_life, etc.\n\nFor task #18, research the set-specific mechanics in TLA/TDM/ECL by examining the Java card implementations. Look for keyword abilities unique to these sets (e.g., bending mechanics in TLA, mobilize in TDM). Implement each as a reusable ability module in mtg-cards/src/keywords/.\n\nAfter #18, you can also help with #19 (Tier 2 cards) or #25 (test framework) once they unblock."
  }
}

{
  "success": true,
  "message": "Message sent to cards's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@cards",
    "targetColor": "yellow",
    "summary": "Building-block abilities ready, full API available",
    "content": "Task #17 (building-block abilities) is complete. You now have a rich set of ability/effect builders available:\n\n**Triggered ability builders**: enters_battlefield_triggered, dies_triggered, attacks_triggered, combat_damage_to_player_triggered, beginning_of_upkeep_triggered, beginning_of_end_step_triggered, spell_cast_triggered, other_creature_etb_triggered, any_creature_dies_triggered\n\n**Effect builders**: deal_damage, draw_cards, gain_life, lose_life, boost_until_eot, create_token, counter_spell, scry, mill, discard_cards, bounce, reanimate, add_p1p1_counters, tap/untap_target, destroy_all, damage_opponents, search_library, gain_control, gain_protection, indestructible, hexproof\n\n**Static effects**: boost_controlled, grant_keyword_controlled, cant_block, cant_attack, cost_reduction\n\n**Costs**: pay_mana, tap_self, sacrifice_self/other, pay_life, discard, exile_from_hand/graveyard, remove_counters\n\nUse these to implement FDN cards with abilities (not just vanilla/keyword). Once you finish #11, you're assigned to #19 (Tier 2 cards for all 4 sets)."
  }
}

20 of 26 tasks complete. We're entering Phase 3 — integration and complex cards.

Teammate	Completed	Working On	Next Up
`engine`	#1-6, #13-17 (12)	#23 (full game loop integration)	#25 (tests), #26 (perf)
`ai`	#7-9, #12, #20-22 (7)	#18 (set-specific keywords)	help with #19 or #25
`cards`	#10 (1)	#11 (FDN cards)	#19 (Tier 2 cards)

The critical path is now #23 (full game loop) — once that's done, testing (#25) and perf (#26) can start. All three teammates have active work.

<teammate-message teammate_id="cards" color="yellow" summary="Completed FDN 154 cards, all tests pass"> Completed tasks #11 and #12:

Task #11 — FDN curated subset (~150 cards): Done. FDN now has 154 cards total (149 unique + 5 basic lands). Added 79 Tier 2 cards including:

14 vanilla/keyword creatures (Savannah Lions, Gigantosaurus, Shivan Dragon, Juggernaut, etc.)
32 creatures with abilities (Guttersnipe, Reclamation Sage, Inspiring Overseer, Brineborn Cutthroat, etc.)
23 instants (Giant Growth, Unsummon, Cancel, Negate, Opt, Snakeskin Veil, etc.)
9 sorceries (Day of Judgment, Duress, Dragon Fodder, Chart a Course, etc.)
1 enchantment (Pacifism)

Task #12 — Tier 1 TLA/TDM/ECL: Already completed last session. All Tier 1 cards from tier files implemented.

All 5 cargo tests pass. Current set card counts:

FDN: 154 cards
TLA: 52 cards (someone added 32 more since last session)
TDM: 65 cards
ECL: 40 cards

Updated test assertions to use >= thresholds so they stay robust as teammates add cards.

Ready for next task — I can work on Task #18 (set-specific keywords) or #19 (Tier 2 for TLA/TDM/ECL) if their blockers (#17) are resolved.
</teammate-message>

Cards teammate delivering nicely — 154 FDN cards done. Task #19 (Tier 2 cards) is unblocked and already assigned to you. Let me confirm.

{
  "success": true,
  "message": "Message sent to cards's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@cards",
    "targetColor": "yellow",
    "summary": "Start task #19: Tier 2 cards for TLA/TDM/ECL",
    "content": "Great work on FDN — 154 cards is solid. Task #19 (Tier 2 cards for all 4 sets) is unblocked and assigned to you. The blocker (#17 building-block abilities) was completed by the engine teammate.\n\nFocus on TLA, TDM, and ECL since those have the most room to grow:\n- TLA: 52 → needs ~130 more for Tier 2\n- TDM: 65 → needs ~150 more for Tier 2  \n- ECL: 40 → needs ~80 more for Tier 2\n\nThese are cards with single triggered/activated abilities, simple conditionals, modal spells with 2 modes, single continuous effects (lords/anthems). Use the building-block ability builders from mtg-engine/src/abilities.rs.\n\nThe AI teammate is working on #18 (set-specific keywords for TLA/TDM/ECL) in parallel. Coordinate with them if you encounter cards that need set-specific mechanics not yet implemented."
  }
}

21 of 26 tasks complete.

Teammate	Completed	Working On	Next Up
`engine`	12 tasks	#23 (full game loop)	#25 (tests), #26 (perf)
`ai`	7 tasks	#18 (set-specific keywords)	help with #19 or #24
`cards`	2 tasks (#10, #11)	#19 (Tier 2 cards)	#24 (Tier 3+4)

All three teammates are active on Phase 3 work. The engine is integrating the full game loop (#23) — that's the last major gating task before testing and polish.

<teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:31:09.681Z","idleReason":"interrupted"} </teammate-message>

The engine teammate was interrupted while working on task #23 (full game loop). Let me check on them.

{
  "success": true,
  "message": "Message sent to engine's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@engine",
    "targetColor": "blue",
    "summary": "Checking on interrupted status for task #23",
    "content": "You went idle with reason \"interrupted\" while working on task #23 (complete game loop). Are you blocked on something? What's the status of #23? Let me know if you need help or if there's an issue to resolve."
  }
}

Implement the following plan:

Plan: Port XMage to Rust for RL AI Training

Context

XMage is a Java MTG engine that is not thread-safe and doesn't efficiently use CPU at scale. The goal is to port the core game engine, AI player framework, and cards from 4 sets to Rust, with Python bindings via PyO3 for use as an OpenAI Gymnasium RL environment. Only standard 1v1 (two-player duel) is needed.

Card sets to port:

FDN (Foundations, ~730 entries) — curated subset (~150 cards) for core mechanics coverage: counterspells, removal, vanilla creatures, equipment, auras, tokens, basic lands
TLA (Avatar: The Last Airbender, ~392 cards) — full set
TDM (Tarkir: Dragonstorm, ~432 cards) — full set
ECL (Lorwyn Eclipsed, ~227 cards) — full set

Project Structure

Cargo workspace at /mnt/dest-btrfs/home/jc/src/mage/mtg-rl/:

mtg-rl/
  Cargo.toml                    # workspace root
  crates/
    mtg-engine/                 # Core rules engine
    mtg-cards/                  # Card implementations (FDN, TLA, TDM, ECL)
    mtg-ai/                     # AI players + RL interface
    mtg-python/                 # PyO3 bindings (cdylib)
    mtg-tests/                  # Integration test framework + ported JUnit tests

Team Structure (3 teammates)

Teammate 1: `engine` — Core Game Engine

Teammate 2: `ai` — AI Players + PyO3/Gymnasium

Teammate 3: `cards` — Card Implementations for FDN, TLA, TDM, ECL

Phase 1: Foundation (all teams start in parallel)

Engine teammate

Set up Cargo workspace with all 5 crates
constants.rs — All enums (Zone, PhaseStep, CardType, SubType, Layer, Duration, etc.) from Mage/src/main/java/mage/constants/
types.rs — ObjectId, PlayerId (Uuid-based typed wrappers)
mana.rs — Mana struct + arithmetic (port Mage/src/main/java/mage/Mana.java)
counters.rs — Counter types
card.rs — CardData struct (composition-based, replaces CardImpl inheritance)
permanent.rs — Permanent struct (embeds CardData + battlefield state)
player/player.rs — Player struct with life/hand/library/graveyard
player/mana_pool.rs — ManaPool
battlefield.rs, stack.rs — Zone containers
zones.rs — Zone management + zone change logic (port ZonesHandler.java)
state.rs — GameState struct aggregating all zones/effects/triggers
turn.rs — Turn/Phase/Step state machine
game.rs — Game struct shell with new_two_player(), turn loop skeleton

Key design decisions:

Use im crate for persistent HashMap/Vector (cheap clone for AI search)
Use bitflags for keyword abilities (O(1) checks vs Java's hash lookup)
All types Send + Sync — no Rc, RefCell, or raw pointers
UUID-based object references (direct translation from Java)

AI teammate

Define PlayerDecisionMaker trait — the ~15 decision methods from Player.java:
- priority(), choose_target(), choose_use(), select_attackers(), select_blockers(), choose_mode(), assign_damage(), choose_mulligan(), etc.
Define PlayerAction enum (Pass, CastSpell, ActivateAbility, PlayLand)
random_player.rs — Random legal-action player (testing baseline)
evaluator.rs — Port GameStateEvaluator2 scoring (life + permanents + hand)
Design observation encoding (observation.rs) and action space (action.rs)

Critical dependency: AI teammate delivers PlayerDecisionMaker trait by end of Phase 1. Engine integrates it into the game loop.

Cards teammate

registry.rs — CardRegistry with type CardFactory = fn(ObjectId, PlayerId) -> CardData
Set registration files: sets/fdn.rs, sets/tla.rs, sets/tdm.rs, sets/ecl.rs
All basic lands for each set
FDN curated subset first (~150 cards covering core mechanics):
- Counterspells (Cancel, etc.)
- Basic removal (Murder, Doom Blade type)
- Vanilla/keyword creatures across all colors
- Equipment and auras
- Token creators
- Card draw spells
- Combat tricks
All Tier 1 cards from TLA/TDM/ECL — vanilla/keyword-only creatures (~30%)

Critical dependency: Cards teammate needs CardData struct from Engine by end of week 1.

Phase 2: Core Systems

Engine teammate

events.rs — GameEvent enum (600+ types), fire_event, replace_event dispatch
priority.rs — Priority loop (port GameImpl.playPriority)
abilities/ability.rs — Ability trait + common implementations
abilities/activated.rs, triggered.rs, spell.rs, static_ability.rs, mana_ability.rs
effects/continuous.rs — 7-layer effects system (port ContinuousEffects.java):
- Layer 1: Copy → 2: Control → 3: Text → 4: Type → 5: Color → 6: Ability → 7: P/T (with sublayers 7a-7e)
effects/replacement.rs, one_shot.rs, prevention.rs, restriction.rs
combat.rs — Full combat system (port Combat.java — declare attackers/blockers, damage assignment)
watchers/ — Watcher trait + common watchers
filters/ — Filter/Predicate composable system (port StaticFilters.java)
targets/ — Target system (TargetCard, TargetPermanent, TargetPlayer)

AI teammate

heuristic_player.rs — Port ComputerPlayer.java (1,350 lines) — heuristic-based decisions
Start minimax_player.rs — Port ComputerPlayer6.java (1,251 lines) — minimax with alpha-beta + parallel search via rayon
Start gym.rs — Gymnasium env logic (step/reset/observation/action_mask)
mtg-python/src/lib.rs — PyO3 module skeleton with #[pyclass] MtgEnv

Cards teammate

Set-specific keyword mechanics:
- keywords/waterbend.rs — TLA mechanic
- keywords/airbend.rs — TLA mechanic
- keywords/mobilize.rs — TDM mechanic
Port common building-block abilities to mtg-engine:
- Triggers: EntersBattlefieldTriggeredAbility, DiesTriggeredAbility, AttacksTriggeredAbility, DealsCombatDamageToAPlayerTriggeredAbility, BeginningOfEndStepTriggeredAbility, SpellCastControllerTriggeredAbility
- Effects: DestroyTargetEffect, ExileTargetEffect, DamageTargetEffect, DrawCardSourceControllerEffect, GainLifeEffect, BoostTargetEffect, BoostControlledEffect, CreateTokenEffect, CounterTargetEffect, ScryEffect, ExileUntilSourceLeavesEffect
- Costs: TapSourceCost, SacrificeSourceCost, DiscardCost, PayLifeCost
All Tier 2 cards (~35%) — standard ability compositions across all 4 sets
Begin Tier 3 cards (~20%) — modal spells, lords, conditional effects

Phase 3: Integration & Complex Cards

Engine teammate

Complete game loop: full game playable with simple cards end-to-end
State-based actions (SBA) checking
Stack resolution edge cases (fizzle, counter, copy on stack)
Last-known information (LKI) system
Transform/double-faced card support
Aura/equipment attachment system
Performance: profiling, im:: tuning, verify Send + Sync everywhere
Concurrency validation: run parallel games via rayon, establish baseline throughput

AI teammate

Complete minimax player with parallel branch search
Complete PyO3 bindings + Python Gymnasium wrapper (pip install via maturin)
Reward shaping: win/loss (+1/-1), intermediate reward from life differential
Action space: two-phase approach (action type selection, then parameterization) to avoid combinatorial explosion
Observation space: fixed-size tensors (life, mana, permanents, hand, stack, phase, action mask)

Cards teammate

All Tier 3 cards — moderate complexity (modal, lords, multi-ability)
All Tier 4 cards (~15%) — planeswalkers, DFCs, sagas, custom effects
Card-specific unit tests for every complex card

Phase 4: Testing & Polish

Test strategy: Port core + cherry-pick + gap-fill

1. Port ALL existing core engine tests from Mage.Tests/:

Combat tests (12 files) — Mage.Tests/.../test/combat/
Game tests (5 files) — Mage.Tests/.../test/game/
State-based action tests (1 file)
Turn modification tests (2 files)
LKI tests (1 file)

2. Port card-specific tests for our 4 sets:

TDM: 7 existing test files
FDN: 1 existing test file
TLA, ECL: 0 existing tests (write new ones)

3. Cherry-pick card tests from OTHER sets that exercise critical mechanics missing from our sets:

Counterspell interactions (stack mechanics)
Replacement effect ordering
Triggered ability ordering (APNAP)
Copy/clone effects
X spells
Protection/hexproof/ward
Sacrifice-as-cost vs sacrifice-as-effect
"Dies" triggers vs "leaves the battlefield"

4. Write new Rust tests for remaining gaps:

7-layer continuous effects system (each layer individually + interactions)
Mana payment system (generic, colored, conditional, hybrid)
Stack resolution (priority passing, fizzle, counter)
Zone transition edge cases
State-based actions (comprehensive)

5. Fuzz + performance testing:

Random games with crash detection
Establish games/second baseline and profile bottlenecks (optimize iteratively, no fixed target)
Verify the Gymnasium env runs end-to-end (reset → step → observe → repeat)
RL agent training (PPO etc.) deferred to a future phase

Test framework mirrors CardTestPlayerBase API:

rust

Key Design Decisions

Decision	Choice	Why
Object identity	`uuid` crate, typed wrappers	Direct from Java, `Send + Sync`
Inheritance → Rust	Composition + traits	Idiomatic Rust; CardData embeds in Permanent
Card implementations	Factory fns + registry	No class hierarchy; cards are data + behavior
Keywords	`bitflags` u64	O(1) checks, huge perf win over Java HashMap
Game state cloning	`im` crate persistent structures	Near-O(1) clone for AI search branches
Effect layers	Direct port of Java 7-layer system	MTG rule 613 requires exact ordering
Thread safety	All `Send + Sync`, no Rc/RefCell	Entire point of the port
Parallelism	`rayon` for games + AI search	Work-stealing thread pool
Python bindings	PyO3 + maturin	Industry standard Rust-Python interop
RL action space	Two-phase (type + parameterization)	Avoids combinatorial explosion

Critical Source Files (Java → Rust reference)

Mage/src/main/java/mage/game/GameImpl.java (4,270 lines) → mtg-engine/src/game.rs
Mage/src/main/java/mage/game/GameState.java (1,758 lines) → mtg-engine/src/state.rs
Mage/src/main/java/mage/abilities/effects/ContinuousEffects.java (1,427 lines) → mtg-engine/src/effects/continuous.rs
Mage/src/main/java/mage/game/combat/Combat.java (1,956 lines) → mtg-engine/src/combat.rs
Mage/src/main/java/mage/game/permanent/PermanentImpl.java (2,202 lines) → mtg-engine/src/permanent.rs
Mage/src/main/java/mage/abilities/AbilityImpl.java (1,966 lines) → mtg-engine/src/abilities/ability.rs
Mage/src/main/java/mage/players/Player.java (760 lines) → PlayerDecisionMaker trait
Mage.Player.AI.MA/.../ComputerPlayer6.java (1,251 lines) → mtg-ai/src/minimax_player.rs
Mage.Player.AI/.../ComputerPlayer.java (1,350 lines) → mtg-ai/src/heuristic_player.rs
Mage.Sets/src/mage/sets/Foundations.java — FDN set definition (curated subset source)
Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java — TLA set definition
Mage.Sets/src/mage/sets/TarkirDragonstorm.java — TDM set definition
Mage.Sets/src/mage/sets/LorwynEclipsed.java — ECL set definition

If you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /mnt/dest-btrfs/home/jc/.claude/projects/-mnt-dest-btrfs-home-jc-src-mage/60ce8554-7ed5-4f1a-b3ee-e636dd4f7ae0.jsonl

If this plan can be broken down into multiple independent tasks, consider using the TeamCreate tool to create a team and parallelize the work.

Waiting for the engine teammate's response. Task #23 is on the critical path — #24 (complex cards), #25 (tests), and #26 (performance) are all blocked on it.

<teammate-message teammate_id="engine" color="blue" summary="Task #23 complete, extra_turns_lifo test passes fine"> The `extra_turns_lifo` test passes fine -- all 157 tests pass. It may have been a transient issue or the AI teammate was testing against a stale build.

Task #23 (Complete game loop) is now done. Here's what was implemented:

State-based actions (state.rs):

Legend rule (704.5k) -- duplicate legendary permanents per controller
+1/+1 and -1/-1 counter annihilation (704.5r)
Planeswalker zero loyalty (704.5j)
5 new SBA tests

Game loop enhancements (game.rs):

London mulligan procedure with decision maker integration
Mana pool clearing at phase transitions
Watcher reset at turn boundaries
Activated ability support in priority loop (compute_legal_actions + activate_ability)
Mana ability activation (resolves immediately, doesn't use stack)
Cost payment system (tap, mana, life, sacrifice, discard)
Effect execution engine (15+ effect types: damage, destroy, exile, bounce, draw, gain life, lose life, counters, boost, tap/untap, counter spell, add mana, discard, mill, create token)
Fizzle check on resolution (all targets gone = spell fizzles)
Ability registration when permanents enter/leave battlefield
AbilityStore added to GameState
abilities: Vec<Ability> field added to CardData

Test count: 157 total (9 new game loop tests)

Ready to pick up task #25 (Port existing Java tests) or #26 (Performance optimization) next. Which would you prefer?
</teammate-message>

<teammate-message teammate_id="engine" color="blue" summary="Task #25 complete: test framework built, 225 tests passing"> Task #25 (Port existing Java tests and write Rust test framework) is now complete. Here's what was built:

mtg-tests crate - 3 files:

mtg-tests/src/lib.rs - module declarations and re-exports
mtg-tests/src/scripted_player.rs - ScriptedPlayer decision maker that follows pre-programmed actions (Rust equivalent of Java's TestPlayer)
mtg-tests/src/framework.rs - GameTest declarative builder mirroring Java's CardTestPlayerBase API

Framework features:

Card factories for 16 known cards: basic lands, Grizzly Bears, Lightning Bolt, Llanowar Elves, Giant Growth, Shock, Divination, Murder, Unsummon, Healing Salve, Hill Giant, Serra Angel
Setup: add_card(), add_card_count(), register_card() for custom cards
Actions: cast_spell(), play_land(), attack(), block(), set_choice(), stop_at()
11 assertion methods: assert_life(), assert_permanent_count(), assert_graveyard_count(), assert_hand_count(), assert_battlefield_count(), assert_power_toughness(), assert_tapped(), assert_counter_count(), assert_exile_count(), assert_stack_size(), assert_game_over()
Direct effect execution via game.execute_effects() for unit-testing individual effects

Tests: 11 self-tests all passing. Full workspace: 225 tests passing (157 engine + 52 AI + 5 cards + 11 framework).

Also made process_state_based_actions(), execute_effects(), and draw_cards() public on Game to support the test framework.

All my assigned engine tasks are now complete (#1-6, #13-17, #23, #25). Let me know what to work on next.
</teammate-message>

<teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:38:57.244Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue" summary="No blockers, #23 and #25 both complete, ready for next task"> No blockers -- both #23 and #25 are fully complete. The "interrupted" status was from a previous session that ran out of context mid-work, but I picked up right where I left off in this session and finished everything.

Current status:

Task #23 (Complete game loop) -- COMPLETED in the previous session
Task #25 (Port existing Java tests / write Rust test framework) -- COMPLETED just now

All 225 tests pass across the workspace (157 engine + 52 AI + 5 cards + 11 test framework). All my assigned engine tasks (#1-6, #13-17, #23, #25) are done. Ready for whatever you'd like me to work on next.
</teammate-message>

<teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:39:21.945Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:39:25.984Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:39:28.923Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:39:50.182Z","idleReason":"available","summary":"[to cards] All engine tasks done, full API summary for card building"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:39:53.442Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:08.503Z","idleReason":"available","summary":"[to cards] Everything already built, no stubs needed, fully unblocked"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:11.881Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:14.814Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:24.772Z","idleReason":"available","summary":"[to cards] Task #4 already done, can add missing SubType variants"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:27.092Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:29.530Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:31.646Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:34.089Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:36.321Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:38.515Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:41.350Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:43.721Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T18:40:46.556Z","idleReason":"available"} </teammate-message>

The engine teammate has completed both #23 and #25, bringing us to 23 of 26 tasks complete. They're now idle and available. Let me assign them to #26 (performance optimization) which is the last engine-focused task. Let me also check the status of the remaining tasks.

Remaining tasks:

#18 (set-specific keywords) - AI is working on this
#19 (Tier 2 cards) - cards is working on this
#24 (Tier 3+4 cards) - blocked on #19 and #23 (now #23 is done, still blocked on #19)
#26 (performance optimization) - blocked on #23 (now done) and #22 (done) → UNBLOCKED

Now that #26 is unblocked, I'll get the engine teammate started on it right away.

The engine teammate crushed it — 23 of 26 tasks complete, 225 tests passing. Let me assign them to #26 (performance) which is now unblocked.

{
  "success": true,
  "message": "Message sent to engine's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@engine",
    "targetColor": "blue",
    "summary": "Assigned task #26: performance and concurrency validation",
    "content": "Incredible work — #23 and #25 both done, 225 tests passing. You've completed 14 tasks total.\n\nYou're now assigned to task #26 (Performance optimization and concurrency validation). Both blockers (#23 and #22) are resolved. Here's what to focus on:\n\n1. **Send + Sync verification**: Use static_assertions or compile-time checks to verify all core types (GameState, Game, CardData, Permanent, Player) are Send + Sync\n2. **Parallel game runner**: Use rayon to run multiple games simultaneously. Verify no data races.\n3. **Benchmarks**: Set up criterion benchmarks for:\n   - GameState clone speed (this is critical for AI search)\n   - Full game simulation (random vs random, games/second)\n   - AI decision time\n4. **Profile hot paths**: Run with cargo flamegraph or similar to identify bottlenecks\n5. **im:: tuning**: Check if the persistent data structures are right-sized\n6. **Gymnasium end-to-end**: Verify the PyO3 env can reset → step → observe → repeat without errors\n\nThis is the final polish task for the engine. Take your time to get solid baseline numbers."
  }
}

23 of 26 tasks complete. Home stretch:

Teammate	Completed	Working On	Status
`engine`	14 tasks (#1-6, #13-17, #23, #25)	#26 (perf + concurrency)	Final engine task
`ai`	7 tasks (#7-9, #12, #20-22)	#18 (set-specific keywords)	Then help with #24
`cards`	2 tasks (#10, #11)	#19 (Tier 2 cards)	Then #24 (complex cards)

3 tasks remaining: #18, #19, #24 (cards) + #26 (perf). Once #18 and #19 finish, #24 (Tier 3+4 complex cards) unblocks as the last card work.

<teammate-message teammate_id="ai" color="green" summary="Task #12 complete: 377 cards across TDM/TLA/ECL/FDN"> Task #12 is complete. I've implemented Tier 1 cards for all three sets:

TDM (Tarkir: Dragonstorm): 60 cards registered (55 creatures + 5 basic lands + Evolving Wilds)
TLA (Avatar: The Last Airbender): 66 cards registered (61 creatures + 5 basic lands)
ECL (Lorwyn Eclipsed): 102 cards registered (91 creatures + 10 spells/noncreature permanents + 5 basic lands + Evolving Wilds)

Total across all sets including FDN: 377 unique card factory functions.

All cards have verified stats from the Java source (P/T, mana costs, creature types, keyword abilities). Cards with triggered/activated abilities that we can't implement yet have their bodies as stat blocks ready for gameplay, with comments noting the abilities for Tier 2+ implementation.

All 225 tests pass across the workspace (52 mtg-ai, 5 mtg-cards, 157 mtg-engine, 11 mtg-tests).
</teammate-message>

377 cards across all sets — solid. You're already assigned to #18 (set-specific keywords). Let me confirm.

{
  "success": true,
  "message": "Message sent to ai's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@ai",
    "targetColor": "green",
    "summary": "Move to task #18: set-specific keywords",
    "content": "Nice work on the Tier 1 cards. Please move on to task #18 (set-specific keywords) which you're already assigned to. Research the unique mechanics in TLA, TDM, and ECL by examining the Java card implementations, then implement each as a reusable keyword module in mtg-cards/src/keywords/. This will be needed by the Tier 2+ cards."
  }
}

Status unchanged — 23 of 26 tasks complete. AI moving to #18, cards on #19, engine on #26.

<teammate-message teammate_id="engine" color="blue" summary="Task #26 done: all Send+Sync verified, ~88 games/sec, 6.5x rayon speedup"> Task #26 (Performance optimization and concurrency validation) is complete. Here's the full report:

1. Send + Sync Compile-Time Verification

All core types verified at compile time via static_assertions::assert_impl_all!:

Core types: ObjectId, PlayerId, AbilityId
Game data: CardData, Permanent, Mana, ManaCost, Counters, Player, ManaPool
Zones: Battlefield, Stack, Exile, CardStore
State: GameState
Abilities: Ability, AbilityStore, Cost, Effect
Events: GameEvent
Combat: CombatState
AI: RandomPlayer, HeuristicPlayer, MtgGymEnv

All pass -- every type is Send + Sync.

2. Parallel Games via Rayon

Verified with tests:

parallel_games_complete_without_panic -- 20 games in parallel, no panics
parallel_games_produce_varied_results -- different seeds produce different outcomes
parallel_gymnasium_envs -- 8 gym envs run in parallel
throughput_baseline -- validates >1 game/sec minimum

3. Criterion Benchmarks (baseline numbers)

Benchmark	Time
`game_state_clone` (10 permanents)	15.5 us
`game_state_clone_empty`	13.5 us
`sba_check` (10 permanents)	936 ns
`full_game_simulation` (random vs random)	11.3 ms (~88 games/sec)
`gym_env_step`	1.06 us
`gym_env_reset`	2.43 us
Sequential 10 games	110.7 ms
Parallel 10 games (rayon)	17.1 ms (6.5x speedup)

4. Key Insights

~88 games/second with random players (single-threaded)
~585 games/second with rayon parallelism (10 games batch)
6.5x parallel speedup on this machine
GameState clone is fast at ~15us, good for AI search (minimax can clone ~65k states/sec)
SBA check is sub-microsecond, no optimization needed
Gym env is very fast (placeholder mode), will need re-benchmarking when full game integration is done

5. Gymnasium End-to-End

Verified via tests: reset -> step -> observe -> repeat works correctly in both single and parallel environments.

Files Created/Modified

mtg-tests/src/concurrency.rs -- Send+Sync checks + 6 concurrency tests
mtg-tests/benches/game_bench.rs -- 8 criterion benchmarks
mtg-tests/Cargo.toml -- added rayon, static_assertions, criterion
mtg-tests/src/lib.rs -- added concurrency module
Workspace Cargo.toml -- added criterion, static_assertions to workspace deps

Total: 231 tests passing across workspace.
</teammate-message>

The engine teammate has completed task #26 — the last engine task. All engine work is done. That's 15 tasks for the engine teammate. Excellent numbers: 88 games/sec single-threaded, 585 games/sec with rayon, 6.5x parallel speedup, all types Send+Sync verified.

Let me update the task list and figure out what's left:

#18 (set-specific keywords) - AI working on it
#19 (Tier 2 cards) - cards working on it
#24 (Tier 3+4 cards) - blocked on #19 and #23 (done)
24 of 26 tasks complete

The engine teammate is now free. I could shut them down since card work is fairly mechanical, but having three people on cards would help with the volume. I'll redirect them to help with #24 once it unblocks.

Actually, #24 is blocked on #19, so the engine should help with #19 first to speed things up, then everyone can focus on #24 together.

Phenomenal results — 88 games/sec single-threaded, 585 games/sec with rayon, all types Send+Sync verified. The engine is rock solid.

24 of 26 tasks complete. Only #18 (set-specific keywords) and #19 (Tier 2 cards) remain, then #24 (Tier 3+4) unblocks. Let me redirect the engine teammate to help accelerate card work.

{
  "success": true,
  "message": "Message sent to engine's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@engine",
    "targetColor": "blue",
    "summary": "Help with task #19: Tier 2 cards for TLA/TDM/ECL",
    "content": "Outstanding performance numbers — 88 games/sec, 6.5x rayon speedup, all Send+Sync verified. All 15 engine tasks are complete.\n\nOnly 2 tasks remain before #24 (Tier 3+4 complex cards) unblocks: #18 (set-specific keywords, AI is on it) and #19 (Tier 2 cards, cards teammate is on it). \n\nPlease help the cards teammate with #19 — Tier 2 cards for TLA/TDM/ECL. These are cards with single triggered/activated abilities, simple conditionals, lords/anthems. Focus on whichever set has the most cards remaining. Read the mtg-cards/src/cards/ files to see what's already implemented, then add more cards using the ability builders you created. Coordinate with the cards teammate to avoid conflicts — maybe you take TDM, they take TLA, or split by letter range."
  }
}

24 of 26 tasks complete. 231 tests passing.

Teammate	Total Done	Working On
`engine`	15 tasks	Helping with #19 (Tier 2 cards)
`ai`	7 tasks	#18 (set-specific keywords)
`cards`	2 tasks	#19 (Tier 2 cards)

Key metrics from the Rust engine:

88 games/sec single-threaded (random vs random)
585 games/sec with rayon parallelism
15.5 us GameState clone (65k clones/sec for AI search)
Sub-microsecond SBA checks and gym env steps
All types Send + Sync verified at compile time

We're in the final stretch — just card implementations remaining.

<teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T21:02:43.541Z","idleReason":"available"} </teammate-message> <teammate-message teammate_id="engine" color="blue" summary="Task #26 already done, see earlier report"> Thanks for the assignment, but I already completed Task #26 and sent you the full report a few minutes ago. Check your inbox for the detailed benchmark numbers and results summary.

Quick recap: All Send+Sync verified, ~88 games/sec single-threaded, 6.5x rayon speedup, 231 tests passing. All files are in the mtg-tests crate (concurrency.rs + benches/game_bench.rs).

All my assigned tasks are now complete. Ready for whatever comes next.
</teammate-message>

<teammate-message teammate_id="engine" color="blue"> {"type":"idle_notification","from":"engine","timestamp":"2026-02-13T21:02:55.062Z","idleReason":"available"} </teammate-message>

The engine teammate missed the card work assignment. Let me resend more clearly.

{
  "success": true,
  "message": "Message sent to engine's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@engine",
    "targetColor": "blue",
    "summary": "New assignment: help implement TDM Tier 2 cards",
    "content": "Yes, I know #26 is done — great work! I'm now asking you to help with a DIFFERENT task: help the cards teammate with task #19 (Tier 2 cards for TLA/TDM/ECL).\n\nYour engine work is all complete. The remaining work is card implementations. Please:\n1. Read mtg-cards/src/cards/tdm.rs to see what TDM cards exist\n2. Read the Java TDM card source files to find cards with single triggered/activated abilities\n3. Add more TDM Tier 2 cards using the ability builders you created in mtg-engine\n\nThis helps us finish faster since you wrote the ability API and know it best. Focus on TDM cards specifically to avoid conflicts with the cards teammate."
  }
}

Waiting for the engine to pick up the card work. Meanwhile, AI is on #18 and cards is on #19.

How are we doing overall on cards?

Let me check the actual card counts across all sets.

Let me check directly.

echo "=== Keyword modules ===" && ls mtg-cards/src/cards/keywords/ 2>/dev/null || echo "No keywords dir yet" && echo "" && echo "=== Total pub fn in card files ===" && grep -c "pub fn " mtg-cards/src/cards/fdn.rs mtg-cards/src/cards/ecl.rs mtg-cards/src/cards/tdm.rs mtg-cards/src/cards/tla.rs mtg-cards/src/cards/basic_lands.rs 2>/dev/null

Exit code 2
=== Keyword modules ===
No keywords dir yet

=== Total pub fn in card files ===
mtg-cards/src/cards/basic_lands.rs:6

/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/cards/mod.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/mod.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/lib.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/cards/basic_lands.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/tdm.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/fdn.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/registry.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/tla.rs
/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/src/sets/ecl.rs

echo "=== Card fn counts per set file ===" && for f in mtg-cards/src/sets/fdn.rs mtg-cards/src/sets/tla.rs mtg-cards/src/sets/tdm.rs mtg-cards/src/sets/ecl.rs; do count=$(grep -c "pub fn " "$f" 2>/dev/null); reg=$(grep -c 'registry\.register' "$f" 2>/dev/null); echo "$f: $count factory fns, $reg registrations"; done && echo "" && echo "=== Total ===" && total=$(grep -r 'registry\.register' mtg-cards/src/sets/ | grep -v '//' | wc -l); echo "Total registered: $total"

=== Card fn counts per set file ===
mtg-cards/src/sets/fdn.rs: 2 factory fns, 149 registrations
mtg-cards/src/sets/tla.rs: 1 factory fns, 66 registrations
mtg-cards/src/sets/tdm.rs: 1 factory fns, 76 registrations
mtg-cards/src/sets/ecl.rs: 1 factory fns, 122 registrations

=== Total ===
Total registered: 413

Now let me check what the Java targets are for comparison.

cd /mnt/dest-btrfs/home/jc/src/mage && echo "=== Java set card counts ===" && for f in Mage.Sets/src/mage/sets/Foundations.java Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java Mage.Sets/src/mage/sets/TarkirDragonstorm.java Mage.Sets/src/mage/sets/LorwynEclipsed.java; do count=$(grep -c 'cards.add' "$f" 2>/dev/null); name=$(basename "$f" .java); echo "$name: $count cards"; done

=== Java set card counts ===
Foundations: 730 cards
AvatarTheLastAirbender: 392 cards
TarkirDragonstorm: 432 cards
LorwynEclipsed: 413 cards

Here's the card implementation status:

Set	Java Total	Rust Implemented	Coverage
FDN (Foundations)	730	149	20% (curated subset — by design, target ~150)
TLA (Avatar)	392	66	17%
TDM (Tarkir Dragonstorm)	432	76	18%
ECL (Lorwyn Eclipsed)	413	122	30%
Total	1,967	413	21%

FDN is on target — we planned ~150 curated cards and have 149. The other 3 sets need significant work:

ECL is furthest along at 30% (122/413)
TDM at 18% (76/432) — engine teammate was assigned to help here
TLA at 17% (66/392) — needs the most work

For full coverage of TLA/TDM/ECL, we need ~983 more cards across those 3 sets. The current Tier 1 (vanilla/keyword) cards are done; now it's Tier 2 (abilities) and beyond. No set-specific keywords directory exists yet — the AI teammate (#18) is still working on that.

Three teammates are on card work now (cards on #19, AI on #18, engine helping with TDM). The bottleneck is card volume — it's largely mechanical but there are a lot of them.

<teammate-message teammate_id="card-count-check" color="purple" summary="Card count report: 380 unique cards across 4 sets"> Here are the card counts for the mtg-cards crate at `/mnt/dest-btrfs/home/jc/src/mage/mtg-rl/mtg-cards/`:

Card Factory Function Counts Per Set

FDN (Foundations) — `sets/fdn.rs`

149 card factory functions (150 total fn minus 1 pub fn register)
Includes 1 pub fn evolving_wilds (referenced by TDM and ECL)
Examples: Aegis Turtle, Serra Angel, Llanowar Elves, Omniscience, Day of Judgment, Pacifism, Gigantosaurus, Shivan Dragon

TLA (Avatar: The Last Airbender) — `sets/tla.rs`

66 card factory functions (67 total fn minus 1 pub fn register)
Examples: Badgermole, Kyoshi Warriors, Tiger-Seal, The Walls of Ba Sing Se, Lightning Strike, Octopus Form, Fire Nation Attacks!

TDM (Tarkir: Dragonstorm) — `sets/tdm.rs`

59 card factory functions (60 total fn minus 1 pub fn register)
Note: TDM also registers "Evolving Wilds" from FDN via super::fdn::evolving_wilds (not a new factory)
Examples: Craterhoof Behemoth, Jeskai Brushmaster, Dragon Sniper, Boulderborn Dragon, Wingblade Disciple

ECL (Lorwyn Eclipsed) — `sets/ecl.rs`

101 card factory functions (102 total fn minus 1 pub fn register)
Note: ECL also registers "Evolving Wilds" from FDN (not a new factory)
Examples: Bloom Tender, Crib Swap, Boldwyr Aggressor, Changeling Wayfinder, Prismabasher, Springleaf Drum

Basic Lands — `cards/basic_lands.rs`

5 card factory functions: Plains, Island, Swamp, Mountain, Forest
Plus 1 pub fn register helper
Shared across all 4 sets

Totals

Set	Unique factory fns	Registered (incl. basics + shared)
FDN	149	154 (149 + 5 basics)
TLA	66	71 (66 + 5 basics)
TDM	59	65 (59 + 5 basics + Evolving Wilds from FDN)
ECL	101	107 (101 + 5 basics + Evolving Wilds from FDN)

Total unique card factory functions: 380 (149 + 66 + 59 + 101 + 5 basics)

Evolving Wilds is shared (defined once in FDN, registered in TDM and ECL too), so the deduplicated unique card count is 380 unique cards across all sets.

Keywords Directory

There is no keywords/ directory in the mtg-cards crate. Set-specific mechanics are not implemented as separate modules here. The keyword abilities are defined as bitflags in the mtg-engine crate's constants.rs (e.g., KeywordAbilities::CHANGELING, KeywordAbilities::CONVOKE, KeywordAbilities::PROWESS etc.).
</teammate-message>

<teammate-message teammate_id="card-count-check" color="purple"> {"type":"idle_notification","from":"card-count-check","timestamp":"2026-02-13T21:04:40.019Z","idleReason":"available"} </teammate-message>

Thanks for the detailed breakdown. Let me clean up the explorer agent.

So to summarize the refined card count — 380 unique card implementations:

Set	Unique Cards	Target (full set)	Coverage	Notes
FDN	149	~150 (curated)	99%	On target by design
TLA	66	392 (full)	17%	Needs most work
TDM	59	432 (full)	14%	Engine teammate helping
ECL	101	413 (full)	24%	Furthest along
+ basics	5	shared	—
Total	380	~1,387 target	27%

FDN is essentially done. The remaining gap is ~1,000 cards across TLA/TDM/ECL. Three teammates are now on card work:

cards → #19 (Tier 2 across all sets)
ai → #18 (set-specific keywords, needed for ability-heavy cards)
engine → helping with TDM Tier 2

No keywords module exists yet — that's what the AI teammate is building in #18. Once set-specific mechanics land, the Tier 2+ cards that depend on them can be implemented.

<teammate-message teammate_id="card-count-check" color="purple"> {"type":"shutdown_approved","requestId":"shutdown-1771016753400@card-count-check","from":"card-count-check","timestamp":"2026-02-13T21:05:56.780Z","paneId":"in-process","backendType":"in-process"} </teammate-message>

Good, the explorer agent is shut down. Three teammates continuing on card work.

<teammate-message teammate_id="system"> {"type":"teammate_terminated","message":"card-count-check has shut down."} </teammate-message>

Card count check agent cleaned up. Waiting on the three active teammates:

engine — helping with TDM Tier 2 cards
ai — #18 (set-specific keywords)
cards — #19 (Tier 2 cards across sets)

<teammate-message teammate_id="ai" color="green" summary="Task #18 complete: Mobilize, Blight, Behold keywords"> Task #18 (Implement set-specific keywords) is complete. Here's what was done:

Engine changes (mtg-engine/src/abilities.rs)

Added Cost::Blight(u32) — put N -1/-1 counters on a creature you control (ECL mechanic)
Added Cost::RevealFromHand(String) — reveal a card of a specific type from hand (used by Behold)
Added Effect::CreateTokenTappedAttacking { token_name, count } — create tokens tapped and attacking, sacrifice at next end step (used by Mobilize)
Added builder methods: Cost::blight(), Cost::reveal_from_hand(), Effect::create_token_tapped_attacking()

New keyword modules (mtg-cards/src/keywords/)

mobilize.rs — mobilize(source_id, count) returns an attacks-triggered ability creating N 1/1 red Warrior tokens tapped and attacking
blight.rs — blight_cost(count) returns a Cost::Blight(N), plus blight_rules_text(count) helper
behold.rs — behold_cost(subtype) returns a Cost::RevealFromHand("Behold {subtype}"), plus behold_rules_text(subtype) helper

Research findings (no implementation needed)

TLA: No keyword mechanics — Flurry and Renew are ability words (flavor text only), not game mechanics
FDN: No set-specific keywords beyond evergreen
ECL Vivid: Ability word, not a keyword mechanic

Tests

All 241 tests pass (was 225 before). Added 10 new keyword tests + 6 new tests picked up from the mtg-tests crate.

Files changed:

mtg-engine/src/abilities.rs — new Cost/Effect variants and builders
mtg-cards/src/lib.rs — added pub mod keywords
mtg-cards/src/keywords/mod.rs — module index
mtg-cards/src/keywords/mobilize.rs — Mobilize N builder
mtg-cards/src/keywords/blight.rs — Blight N cost builder
mtg-cards/src/keywords/behold.rs — Behold cost builder

</teammate-message>

Task #18 is complete. The AI teammate identified 3 set-specific mechanics (Mobilize for TDM, Blight and Behold for ECL) and implemented them. TLA has no keyword mechanics. 241 tests passing now.

Let me mark #18 complete and assign the AI teammate to help with #19 (Tier 2 cards) or #24. Since #19 is still in progress and the cards teammate could use help, let me assign AI to help with TLA cards specifically since TLA has the lowest coverage (17%) and the AI already knows there are no set-specific keywords to worry about.

Used TaskCreate

Set-specific keywords done — Mobilize (TDM), Blight and Behold (ECL), and confirmed TLA has none. 241 tests passing.

25 of 26 tasks complete. Only #19 (Tier 2 cards) remains before #24 (Tier 3+4) unblocks. Let me redirect the AI to help with TLA — the set with lowest coverage.

{
  "success": true,
  "message": "Message sent to ai's inbox",
  "routing": {
    "sender": "team-lead",
    "target": "@ai",
    "targetColor": "green",
    "summary": "Help with task #19: focus on TLA Tier 2 cards",
    "content": "Great work on #18 — Mobilize, Blight, and Behold are all implemented cleanly. \n\nPlease now help with task #19 (Tier 2 cards). Focus on **TLA (Avatar: The Last Airbender)** — it has the lowest coverage at 66/392 cards (17%). The cards teammate is handling other sets and the engine teammate is on TDM.\n\nFor TLA Tier 2:\n- Cards with single ETB/dies/attacks triggered abilities\n- Cards with single activated abilities  \n- Simple conditional effects\n- Use the new keyword builders you just created where applicable\n- Reference Java implementations at Mage.Sets/src/mage/cards/ for each card\n- Add card factories to mtg-cards/src/sets/tla.rs and register them\n\nThe set has no unique keyword mechanics (as you found), so all cards use standard abilities from mtg-engine."
  }
}

25 of 26 tasks complete, 241 tests passing. All three teammates now converging on card volume:

Teammate	Focus Set	Current Cards	Target
`engine`	TDM	59 → ?	432
`ai`	TLA	66 → ?	392
`cards`	ECL + others	101 → ?	413

Once #19 is done, #24 (Tier 3+4 complex cards) is the final task.

<teammate-message teammate_id="ai" color="green" summary="Asking for next task assignment"> Task #18 is done. The remaining tasks I can see are: - #19 (Tier 2 cards) — in progress with "cards" teammate - #24 (Tier 3+4 cards) — blocked by #19

Is there anything else I should work on? I could help the "cards" teammate with Tier 2 card implementations, or I could assist with another aspect of the project. Let me know what you'd like me to focus on next.
</teammate-message>

<teammate-message teammate_id="cards" color="yellow" summary="Task #19 complete: 433 total cards across 4 sets"> Task #19 (Implement Tier 2 cards ~35% for all 4 sets) is complete. All 17 tests pass.

Final card counts:

FDN: 154 cards (149 unique + 5 basic lands)
TLA: 71 cards (66 unique + 5 basic lands)
TDM: 81 cards (76 unique + 5 basic lands)
ECL: 127 cards (122 unique + 5 basic lands)
Total: 433 cards

This session I added:

ECL: 20 Tier 2 spells (Nameless Inversion, Blossoming Defense, Spell Snare, Sear, Tweeze, Darkness Descends, Feed the Flames, etc.)
TDM: 16 Tier 2 spells (Twin Bolt, Channeled Dragonfire, Caustic/Dispelling/Molten/Piercing Exhale, Dragon's Prey, Snakeskin Veil, etc.)

New verification tests added: ecl_tier2_spells, tdm_tier2_spells.

Files modified:

mtg-cards/src/sets/ecl.rs (20 new spell registrations + factories)
mtg-cards/src/sets/tdm.rs (16 new spell registrations + factories)
mtg-cards/src/registry.rs (updated count thresholds, added 2 new tests)

Ready for next task.
</teammate-message>

<teammate-message teammate_id="ai" color="green"> {"type":"idle_notification","from":"ai","timestamp":"2026-02-13T21:07:04.264Z","idleReason":"available"} </teammate-message>

Task #19 is done. The cards teammate added 36 more cards (20 ECL + 16 TDM), bringing the total to 433. That means #24 (Tier 3+4 cards) is now unblocked (it was blocked on #19 and #23, both now complete).

The AI teammate missed my earlier message about working on TLA cards. Let me mark #19 complete and assign both AI and cards to #24.

Actually wait - the card counts are still quite low relative to targets:

FDN: 154/~150 target — done
TLA: 71/392 — 18%
TDM: 81/432 — 19%
ECL: 127/413 — 31%

We're at 433 cards total, which is only 31% of the ~1,387 target. While #24 focuses on the more complex Tier 3+4 cards, we're still missing a lot of Tier 2 content across the board. I'll mark #19 complete and have all three teammates move to #24, dividing the work by set.

Task #19 done — #24 (final card task) is now unblocked. Let me mobilize all three teammates on it.

200 of 601

Summary

Plan: Port XMage to Rust for RL AI Training

Context

Project Structure

Team Structure (3 teammates)

Teammate 1: engine — Core Game Engine

Teammate 2: ai — AI Players + PyO3/Gymnasium

Teammate 3: cards — Card Implementations for FDN, TLA, TDM, ECL

Phase 1: Foundation (all teams start in parallel)

Engine teammate

AI teammate

Cards teammate

Phase 2: Core Systems

Engine teammate

AI teammate

Cards teammate

Phase 3: Integration & Complex Cards

Engine teammate

AI teammate

Cards teammate

Phase 4: Testing & Polish

Test strategy: Port core + cherry-pick + gap-fill

Key Design Decisions

Critical Source Files (Java → Rust reference)

1. Send + Sync Compile-Time Verification

2. Parallel Games via Rayon

3. Criterion Benchmarks (baseline numbers)

4. Key Insights

5. Gymnasium End-to-End

Files Created/Modified

Card Factory Function Counts Per Set

FDN (Foundations) — sets/fdn.rs

TLA (Avatar: The Last Airbender) — sets/tla.rs

TDM (Tarkir: Dragonstorm) — sets/tdm.rs

ECL (Lorwyn Eclipsed) — sets/ecl.rs

Basic Lands — cards/basic_lands.rs

Totals

Keywords Directory

Engine changes (mtg-engine/src/abilities.rs)

New keyword modules (mtg-cards/src/keywords/)

Research findings (no implementation needed)

Tests

Teammate 1: `engine` — Core Game Engine

Teammate 2: `ai` — AI Players + PyO3/Gymnasium

Teammate 3: `cards` — Card Implementations for FDN, TLA, TDM, ECL

FDN (Foundations) — `sets/fdn.rs`

TLA (Avatar: The Last Airbender) — `sets/tla.rs`

TDM (Tarkir: Dragonstorm) — `sets/tdm.rs`

ECL (Lorwyn Eclipsed) — `sets/ecl.rs`

Basic Lands — `cards/basic_lands.rs`