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Implement New Game Effect and Continue Work QueuePublic

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Claude Code

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Claude Opus 4.6

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Feb 14, 7:26 PM

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Summary

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Session command

Read docs/work-queue.md and do the next unchecked batch. For each batch:

Read the engine files (mtg-engine/src/abilities.rs, mtg-engine/src/game.rs) to understand current Effect/StaticEffect variants
If the batch has a NOTE about uncertainty, investigate first and update the queue with findings before committing the fix
If engine work is needed: add the variant, constructor, and match arm, and look for the Java implementation to see the bigger picture
Add a test for any new engine effect (follow the pattern in game.rs mod tests)
Fix all cards listed in the batch (grep to find exact lines, fix across all 4 set files)
cargo check -p mtg-cards && cargo test --lib
Update docs: mark cards in docs/{fdn,tla,tdm,ecl}-remediation.md, update ROADMAP.md
Check off the batch in docs/work-queue.md with today's date
If you discover new cards that fit the current or a future batch while working, add them to the queue

If a batch turns out to be wrong or more complex than described, update the queue with what you learned and move on to the next one.

I'll start by reading the work queue to find the next unchecked batch.

Readwork-queue.md

The next unchecked batch is Batch 9: AddCountersAll. Let me read the engine files and find the card.

Readabilities.rs

Readgame.rs

Let me search for the relevant sections in game.rs and the card in the ECL set file.

954-        true
955-    }
956-
957-    /// Execute a list of effects for a controller with given targets.
958-    pub fn execute_effects(&mut self, effects: &[Effect], controller: PlayerId, all_targets: &[ObjectId], source: Option<ObjectId>) {
959:        // For compound fight/bite spells (e.g. [AddCounters, Bite]), pre-fight/bite
960-        // effects should only apply to the first target (your creature), matching
961-        // Java's per-effect target assignment where AddCountersTargetEffect targets
962-        // target 0 while DamageWithPowerFromOneToAnotherTargetEffect uses both.
963-        let has_fight_or_bite = effects.iter().any(|e| matches!(e, Effect::Fight | Effect::Bite));
964-
--
1058-                        if let Some(player) = self.state.players.get_mut(&opp) {
1059-                            player.life -= *amount as i32;
1060-                        }
1061-                    }
1062-                }
1063:                Effect::AddCounters { counter_type, count } => {
1064-                    let ct = crate::counters::CounterType::from_name(counter_type);
1065-                    // If no targets, fall back to source (self-targeting counters)
1066-                    let effective_targets: Vec<ObjectId> = if targets.is_empty() {
1067-                        source.into_iter().collect()
1068-                    } else {
--
2620-        card.power = Some(3);
2621-        card.toughness = Some(7);
2622-        card.keywords = KeywordAbilities::empty();
2623-        game.state.battlefield.add(Permanent::new(card, p1));
2624-
2625:        // Execute AddCounters with no targets but with source — should add to self
2626-        game.execute_effects(
2627-            &[Effect::add_counters("-1/-1", 2)],
2628-            p1,
2629-            &[],
2630-            Some(source_id),

1306-                        if let Some(&victim_id) = matching.first() {
1307-                            / Simplified: sacrifice the first matching permanent
1308-                            // (proper implementation would let opponent choose)
1309-                            if let Some(perm) = self.state.battlefield.remove(victim_id) {
1310-                                self.state.ability_store.remove_source(victim_id);
1311-                                self.move_card_to_graveyard_inner(victim_id, perm.owner());
1312-                            }
1313-                        }
1314-                    }
1315-                }
1316:                Effect::DestroyAll { filter } => {
1317-                    // Destroy all permanents matching filter
1318-                    let to_destroy: Vec<(ObjectId, PlayerId)> = self.state.battlefield.iter()
1319-                        .filter(|p| Self::matches_filter(p, filter) && !p.has_indestructible())
1320-                        .map(|p| (p.id(), p.owner()))
1321-                        .collect();
1322-                    for (id, owner) in to_destroy {
1323-                        if self.state.battlefield.remove(id).is_some() {
1324-                            self.state.ability_store.remove_source(id);
1325-                            self.move_card_to_graveyard_inner(id, owner);
1326-                        }
1327-                    }
1328-                }
1329:                Effect::DealDamageAll { amount, filter } => {
1330-                    // Deal damage to all creatures matching filter
1331-                    let matching: Vec<ObjectId> = self.state.battlefield.iter()
1332-                        .filter(|p| p.is_creature() && Self::matches_filter(p, filter))
1333-                        .map(|p| p.id())
1334-                        .collect();
1335-                    for id in matching {
1336-                        if let Some(perm) = self.state.battlefield.get_mut(id) {
1337-                            perm.apply_damage(*amount);
1338-                        }
1339-                    }

Let me see the full AddCounters match arm and the ECL card context.

Readgame.rs30 lines

Readecl.rs15 lines

1428-                    }
1429-                }
1430:                Effect::BoostAllUntilEndOfTurn { filter, power, toughness: _ } => {
1431-                    // Give all matching creatures controlled by the effect's controller +N/+M until EOT
1432-                    let you_control = filter.to_lowercase().contains("you control");
--
1447-                    }
1448-                }
1449:                Effect::GrantKeywordAllUntilEndOfTurn { filter, keyword } => {
1450-                    // Grant keyword to all matching creatures controlled by the effect's controller until EOT
1451-                    if let Some(kw) = crate::constants::KeywordAbilities::keyword_from_name(keyword) {

Let me also check for any other cards across all sets that might use this same pattern.

mtg-rl/mtg-cards/src/sets/ecl.rs:1840:    // Sorcery {2}{B}{B}. Put two -1/-1 counters on each creature.
mtg-rl/mtg-cards/src/sets/ecl.rs:1843:        abilities: vec![Ability::spell(id, vec![Effect::Custom("Put two -1/-1 counters on each creature.".into())], TargetSpec::None)],
mtg-rl/mtg-cards/src/sets/tdm.rs:2025:    // Abzan: end step — +1/+1 counter on each creature you control.
mtg-rl/mtg-cards/src/sets/tdm.rs:2035:                "Abzan — At the beginning of your end step, put a +1/+1 counter on each creature you control.",
mtg-rl/mtg-cards/src/sets/tdm.rs:2037:                vec![Effect::Custom("Put +1/+1 counter on each creature you control.".into())],
mtg-rl/mtg-cards/src/sets/tdm.rs:3804:                "Whenever Felothar enters or attacks, you may sacrifice a nonland permanent. When you do, put a +1/+1 counter on each creature you control.",
mtg-rl/mtg-cards/src/sets/tdm.rs:3806:                vec![Effect::Custom("You may sacrifice a nonland permanent. When you do, put a +1/+1 counter on each creature you control.".into())],

mtg-rl/mtg-cards/src/sets/ecl.rs:1840:    // Sorcery {2}{B}{B}. Put two -1/-1 counters on each creature.
mtg-rl/mtg-cards/src/sets/ecl.rs:1843:        abilities: vec![Ability::spell(id, vec![Effect::Custom("Put two -1/-1 counters on each creature.".into())], TargetSpec::None)],
mtg-rl/mtg-cards/src/sets/ecl.rs:1909:            vec![Effect::Custom("Vivid — This spell costs {1} less to cast for each color among permanents you control. Tap up to two target creatures. Put a stun counter on each of them. Draw a card.".into())],
mtg-rl/mtg-cards/src/sets/tdm.rs:2025:    // Abzan: end step — +1/+1 counter on each creature you control.
mtg-rl/mtg-cards/src/sets/tdm.rs:2035:                "Abzan — At the beginning of your end step, put a +1/+1 counter on each creature you control.",
mtg-rl/mtg-cards/src/sets/tdm.rs:2037:                vec![Effect::Custom("Put +1/+1 counter on each creature you control.".into())],
mtg-rl/mtg-cards/src/sets/tdm.rs:3235:                "Renew -- {X}{B}{B}, Exile this card from your graveyard: Put a decayed counter on each of X target creatures. Activate only as a sorcery.",
mtg-rl/mtg-cards/src/sets/tdm.rs:3311:                "At the beginning of your upkeep, return up to two target creature cards with power 2 or less from your graveyard to the battlefield. Put a +1/+1 counter on each of those creatures.",
mtg-rl/mtg-cards/src/sets/tdm.rs:3804:                "Whenever Felothar enters or attacks, you may sacrifice a nonland permanent. When you do, put a +1/+1 counter on each creature you control.",
mtg-rl/mtg-cards/src/sets/tdm.rs:3806:                vec![Effect::Custom("You may sacrifice a nonland permanent. When you do, put a +1/+1 counter on each creature you control.".into())],
mtg-rl/mtg-cards/src/sets/fdn.rs:1990:                "When Felidar Savior enters, put a +1/+1 counter on each of up to two other target creatures you control.",
mtg-rl/mtg-cards/src/sets/fdn.rs:5483:                vec![Effect::Custom("Distribute three +1/+1 counters among one, two, or three target creatures, then double the number of +1/+1 counters on each of those creatures.".into())],

Good. I found additional cards that could use AddCountersAll:

ECL: Darkness Descends (line 1843) — "Put two -1/-1 counters on each creature." → Simple AddCountersAll { counter_type: "-1/-1", count: 2, filter: "creatures" }
TDM line 2037 — "Put +1/+1 counter on each creature you control." → AddCountersAll { counter_type: "+1/+1", count: 1, filter: "creatures you control" } — this is the Abzan end step trigger. Let me check this card.
TDM line 3806 — Felothar has a sacrifice effect followed by countering creatures, but the conditional logic and reflexive trigger make it too complex to handle right now.

Most of the remaining candidates involve distribution mechanics, X-costs, or graveyard interactions that complicate things. Let me look at the TDM card around line 2025 to verify the second one.

Let me check the TDM card that also uses counters on each creature.

Readtdm.rs25 lines

Readtdm.rs20 lines

OK, so for Batch 9:

Darkness Descends (ECL line 1843) — straightforward: "Put two -1/-1 counters on each creature."
Barrensteppe Siege (TDM line 2037) — the Abzan mode: "Put +1/+1 counter on each creature you control." — This is a modal card (choose Abzan or Mardu), but the effect itself is straightforward. I can fix just the effect part even though the modal choice isn't modeled yet.
Felothar (TDM line 3806) — compound: sacrifice + then put +1/+1 counter on each creature. The sacrifice part is conditional ("you may sacrifice"), so this is complex. I'll defer this.
Now I need to check how the matches_filter function handles creature targeting, since I'll need to distinguish between "all creatures" and "creatures you control" for these effects.

Let me check how matches_filter works to understand filter handling for the new effect.

1607:    fn matches_filter(perm: &Permanent, filter: &str) -> bool {
1608-        let f = filter.to_lowercase();
1609-        // "all" or empty matches everything
1610-        if f.is_empty() || f == "all" {
1611-            return true;
1612-        }
1613-        // Check creature types
1614-        for st in &perm.card.subtypes {
1615-            if f.contains(&st.to_string().to_lowercase()) {
1616-                return true;
1617-            }
1618-        }
1619-        // Check card types
1620-        for ct in &perm.card.card_types {
1621-            let ct_name = format!("{:?}", ct).to_lowercase();
1622-            if f.contains(&ct_name) {
1623-                return true;
1624-            }
1625-        }
1626-        // "nonland" filter
1627-        if f.contains("nonland") && !perm.card.card_types.contains(&crate::constants::CardType::Land) {
1628-            return true;
1629-        }
1630-        false
1631-    }
1632-
1633-    /// Check if a CardData matches a simple filter string.
1634-    fn card_matches_filter(card: &CardData, filter: &str) -> bool {
1635-        let f = filter.to_lowercase();
1636-        if f.is_empty() || f == "all" {
1637-            return true;

Readgame.rs30 lines

Good. Now I have all the context I need. Let me also find where in execute_effects I should insert the new match arm — right after AddCounters seems logical. Let me also look at the test section of game.rs for the existing AddCounters test.

Readgame.rs50 lines

Now I have the full picture. Let me find the end of the execute_effects match block to know exactly where to insert the new arm. Let me look for the Custom catch-all:

430-                    perm.removed_keywords = crate::constants::KeywordAbilities::empty();
431-                    // Remove "can't block" sentinel counters
432:                    perm.counters.remove_all(&crate::counters::CounterType::Custom("cant_block".into()));
433-                }
434-                // Empty mana pools
435-                for player in self.state.players.values_mut() {
436-                    player.mana_pool.clear();
437-                }
--
1287-                        if let Some(perm) = self.state.battlefield.get_mut(target_id) {
1288-                            // Use a sentinel counter to indicate can't block
1289:                            perm.add_counters(crate::counters::CounterType::Custom("cant_block".into()), 1);
1290-                        }
1291-                    }
1292-                }
1293-                Effect::Sacrifice { filter } => {
1294-                    // Each opponent sacrifices a permanent matching filter.

439:            _ => {
440-                / Other steps: empty mana pool at step transition (simplified)
441-                // In full rules, mana empties at end of each step/phase.
442-            }
443-        }
444-    }
--
523:                _ => {
524-                    // Other actions (special actions)
525-                    tracker.reset();
526-                    tracker.current = priority_player;
527-                }
528-            }
--
948:                _ => {
949-                    // Other costs (exile from hand, remove counters, sacrifice other, etc.)
950-                    // will be implemented as cards need them
951-                }
952-            }
953-        }
--
1112:                                _ => {} // Countered abilities just vanish
1113-                            }
1114-                        }
1115-                    }
1116-                }
1117-                Effect::AddMana { mana } => {
--
1510:                _ => {
1511-                    // Remaining effects not yet implemented (gain control, protection, etc.)
1512-                }
1513-            }
1514-        }
1515-    }
--
1682:            _ => {
1683-                let legal = self.legal_targets_for_spec(spec, controller);
1684-                if legal.is_empty() {
1685-                    return vec![];
1686-                }
1687-                let requirement = crate::decision::TargetRequirement {

Good. The catch-all _ => at line 1510 is the end of the execute_effects match. I'll add the new match arm before that. Now let me implement everything.

Readgame.rs20 lines

Now I have everything I need. Let me implement:

Add AddCountersAll variant to Effect enum in abilities.rs
Add add_counters_all() constructor
Add match arm in game.rs execute_effects
Add test in game.rs
Fix cards in ecl.rs and tdm.rs

Now add the constructor:

Now add the match arm in game.rs, right before the catch-all:

Now add the test. Let me find the end of the existing test section:

Readgame.rs50 lines

Now I'll add the test right before the closing } of the test module:

Now fix the cards. First, Darkness Descends in ecl.rs:

Now fix Barrensteppe Siege in tdm.rs:

Now let's build and test:

The test used the wrong constructor. Let me check how other tests in that file create a Game:

Readgame.rs20 lines

Readgame.rs30 lines

I see — it uses Game::new_two_player with GameConfig. Let me also check what make_deck does:

Now let me fix my test to use the correct constructor pattern:

All 254 tests pass. Now let me update the docs. First, check the remediation docs and update them.

Readecl-remediation.md5 lines

Readtdm-remediation.md5 lines

Now update ROADMAP.md:

11:[Omitted long matching line]
13:**Batch 2 engine change (2026-02-13):** Modified `execute_effects` to accept an optional `source: Option<ObjectId>` parameter. When `AddCounters` or `RemoveCounters` effects have no selected targets, they now fall back to the source permanent. This enables self-targeting counter effects (e.g., blight creatures putting -1/-1 counters on themselves) without requiring explicit target selection. Test: `add_counters_self_when_no_targets`.
15:**Batch 5 (2026-02-13):** Added `StaticEffect::Ward { cost: String }` variant + `ward()` builder. Ward is a triggered ability that counters targeting spells/abilities unless the opponent pays the cost. The engine stores it as structured data (not yet mechanically enforced during targeting). Replaced `StaticEffect::Custom("Ward ...")` on 7 cards across FDN/TDM/ECL and added `KeywordAbilities::WARD` flags.
44:- Loyalty counters not tracked as a resource
60:[Omitted long matching line]
127:   - ~~Sourbread Auntie/Sting-Slinger/Blighted Blackthorn: self-counter Custom -> `AddCounters` targeting self~~ **DONE**
130:   - ~~Icewind Elemental/Refute: loot/counter Custom -> typed effects~~ **DONE**
131:   - ~~ECL RemoveCounters cards (Encumbered Reejerey, Reluctant Dounguard, Heirloom Auntie, Bristlebane Battler): Custom -> `RemoveCounters` with source fallback~~ **DONE**
168:17. **Renew** (TDM) -- Counter-based death replacement.

ReadROADMAP.md8 lines

ReadROADMAP.md10 lines

ReadROADMAP.md3 lines

Now check off the batch in work-queue.md and update it with the TDM card:

Now let me proceed to Batch 10: Compound self-counter + target effects. Let me read the batch and investigate:

Readwork-queue.md25 lines

Let me check the current state of these cards:

98-    registry.register("Surly Farrier", surly_farrier, "ECL");
99-    registry.register("Tanufel Rimespeaker", tanufel_rimespeaker, "ECL");
100-    registry.register("Thoughtweft Imbuer", thoughtweft_imbuer, "ECL");
101-    registry.register("Thoughtweft Lieutenant", thoughtweft_lieutenant, "ECL");
102-    registry.register("Timid Shieldbearer", timid_shieldbearer, "ECL");
103-    registry.register("Unwelcome Sprite", unwelcome_sprite, "ECL");
104-    registry.register("Virulent Emissary", virulent_emissary, "ECL");
105-    registry.register("Voracious Tome-Skimmer", voracious_tome_skimmer, "ECL");
106-    registry.register("Wanderbrine Preacher", wanderbrine_preacher, "ECL");
107-    registry.register("Wanderwine Distracter", wanderwine_distracter, "ECL");
108:    registry.register("Warren Torchmaster", warren_torchmaster, "ECL");
109-
110-    // ── Spells and non-creature permanents ────────────────────────────────
111-    registry.register("Appeal to Eirdu", appeal_to_eirdu, "ECL");
112-    registry.register("Burning Curiosity", burning_curiosity, "ECL");
113-    registry.register("Cinder Strike", cinder_strike, "ECL");
114-    registry.register("Crib Swap", crib_swap, "ECL");
115-    registry.register("Evolving Wilds", super::fdn::evolving_wilds, "ECL");
116-    registry.register("Liminal Hold", liminal_hold, "ECL");
117-    registry.register("Protective Response", protective_response, "ECL");
118-    registry.register("Springleaf Drum", springleaf_drum, "ECL");
--
1672-        abilities: vec![
1673-            Ability::triggered(id,
1674-                "Whenever Wanderwine Distracter becomes tapped, target creature an opponent controls gets -3/-0 until end of turn.",
1675-                vec![EventType::Tapped],
1676-                vec![Effect::boost_until_eot(-3, 0)],
1677-                TargetSpec::PermanentFiltered("creature an opponent controls".into())),
1678-        ],
1679-        ..Default::default() }
1680-}
1681-
1682:fn warren_torchmaster(id: ObjectId, owner: PlayerId) -> CardData {
1683-    // 2/2 Goblin Warrior for {1}{R}. (Begin combat: blight 1 => creature gains haste)
1684:    CardData { id, owner, name: "Warren Torchmaster".into(), mana_cost: ManaCost::parse("{1}{R}"),
1685-        card_types: vec![CardType::Creature], subtypes: vec![SubType::Goblin, SubType::Warrior],
1686-        power: Some(2), toughness: Some(2), rarity: Rarity::Common,
1687-        abilities: vec![
1688-            Ability::triggered(id,
1689:                "At the beginning of combat on your turn, you may put a -1/-1 counter on Warren Torchmaster. If you do, target creature gains haste until end of turn.",
1690-                vec![EventType::BeginCombat],
1691:                vec![Effect::Custom("Put a -1/-1 counter on Warren Torchmaster. Target creature gains haste until end of turn.".into())],
1692-                TargetSpec::Creature),
1693-        ],
1694-        ..Default::default() }
1695-}
1696-
1697-// ── Spells and non-creature permanents ───────────────────────────────────────
1698-
1699-fn appeal_to_eirdu(id: ObjectId, owner: PlayerId) -> CardData {
1700-    // Instant {3}{W}. Convoke. +2/+1 to up to two creatures.
1701-    CardData { id, owner, name: "Appeal to Eirdu".into(), mana_cost: ManaCost::parse("{3}{W}"),

26-    registry.register("Burdened Stoneback", burdened_stoneback, "ECL");
27-    registry.register("Champion of the Weird", champion_of_the_weird, "ECL");
28-    registry.register("Champions of the Perfect", champions_of_the_perfect, "ECL");
29-    registry.register("Changeling Wayfinder", changeling_wayfinder, "ECL");
30-    registry.register("Chaos Spewer", chaos_spewer, "ECL");
31-    registry.register("Chitinous Graspling", chitinous_graspling, "ECL");
32-    registry.register("Chomping Changeling", chomping_changeling, "ECL");
33-    registry.register("Crossroads Watcher", crossroads_watcher, "ECL");
34-    registry.register("Dawn's Light Archer", dawns_light_archer, "ECL");
35-    registry.register("Deepchannel Duelist", deepchannel_duelist, "ECL");
36:    registry.register("Dream Seizer", dream_seizer, "ECL");
37-    registry.register("Dundoolin Weaver", dundoolin_weaver, "ECL");
38-    registry.register("Eclipsed Boggart", eclipsed_boggart, "ECL");
39-    registry.register("Eclipsed Elf", eclipsed_elf, "ECL");
40-    registry.register("Eclipsed Flamekin", eclipsed_flamekin, "ECL");
41-    registry.register("Eclipsed Kithkin", eclipsed_kithkin, "ECL");
42-    registry.register("Eclipsed Merrow", eclipsed_merrow, "ECL");
43-    registry.register("Elder Auntie", elder_auntie, "ECL");
44-    registry.register("Encumbered Reejerey", encumbered_reejerey, "ECL");
45-    registry.register("Enraged Flamecaster", enraged_flamecaster, "ECL");
46-    registry.register("Explosive Prodigy", explosive_prodigy, "ECL");
--
577-        card_types: vec![CardType::Creature], subtypes: vec![SubType::Merfolk, SubType::Soldier],
578-        power: Some(2), toughness: Some(2), rarity: Rarity::Rare,
579-        abilities: vec![
580-            Ability::static_ability(id,
581-                "Other Merfolk you control get +1/+1.",
582-                vec![StaticEffect::boost_controlled("other Merfolk you control", 1, 1)]),
583-        ],
584-        ..Default::default() }
585-}
586-
587:fn dream_seizer(id: ObjectId, owner: PlayerId) -> CardData {
588-    // 3/2 Faerie Rogue for {3}{B}. Flying. (ETB: blight 1 => opponents discard)
589:    CardData { id, owner, name: "Dream Seizer".into(), mana_cost: ManaCost::parse("{3}{B}"),
590-        card_types: vec![CardType::Creature], subtypes: vec![SubType::Faerie, SubType::Rogue],
591-        power: Some(3), toughness: Some(2), keywords: KeywordAbilities::FLYING,
592-        rarity: Rarity::Common,
593-        abilities: vec![
594-            Ability::enters_battlefield_triggered(id,
595:                "When Dream Seizer enters, put a -1/-1 counter on it. When you do, each opponent discards a card.",
596-                vec![Effect::add_counters("-1/-1", 1), Effect::discard_opponents(1)],
597-                TargetSpec::None),
598-        ],
599-        ..Default::default() }
600-}
601-
602-fn dundoolin_weaver(id: ObjectId, owner: PlayerId) -> CardData {
603-    // 2/1 Kithkin Druid for {1}{G}. (ETB if 3+ creatures: return permanent from graveyard)
604-    CardData { id, owner, name: "Dundoolin Weaver".into(), mana_cost: ManaCost::parse("{1}{G}"),
605-        card_types: vec![CardType::Creature],

Interesting! Dream Seizer was already fixed in Batch 3 — it's using Effect::add_counters("-1/-1", 1) and Effect::discard_opponents(1). That's already working since Batch 2's source fallback lets AddCounters target self when there are no explicit targets.

Warren Torchmaster is more interesting. It currently has:

Effect::Custom("Put a -1/-1 counter on Warren Torchmaster. Target creature gains haste until end of turn.")
TargetSpec::Creature

This is a compound effect: put a -1/-1 counter on self AND give target creature haste.

The self-counter uses the Batch 2 source fallback (no targets needed), and the haste uses the target. Both add_counters("-1/-1", 1) and gain_keyword_eot("haste") already exist. The real issue is whether combining a self-targeting effect with a separate target effect in one resolution works correctly — when execute_effects iterates through them, the add_counters call needs to ignore the selected target and apply to self instead, while gain_keyword_eot applies to the selected creature.

Looking at how AddCounters works, it checks if targets are empty to decide between self-targeting and applying to selected targets. But since the haste effect already populated the targets list, the counter effect would incorrectly apply the -1/-1 to the target creature instead of self — exactly the problem the batch was flagging about combining these effects in one resolution.

The fight/bite approach from earlier won't work here since this isn't a fight effect. The real fix is to model the blight cost as an actual Cost::Blight(1) rather than as an effect, which would keep the self-targeting counter separate from the target-dependent haste ability. If you do, target creature gains haste until end of turn." This is structured as an optional triggered ability with a conditional effect—the trigger fires, then you may pay the cost of putting a -1/-1 counter on Warren Torchmaster, and if you do, the target creature gets haste. I need to check whether triggered abilities in this engine support costs, since that's the key to modeling this correctly.

Dream Seizer is already fixed from Batch 3. The key question is whether Warren Torchmaster's compound self-counter + target effect works correctly. Let me investigate how effect resolution handles targets when mixing self-counter and target effects:

Readgame.rs15 lines

OK, so the current execute_effects passes ALL targets to each effect. For Warren Torchmaster, if the ability has [Effect::add_counters("-1/-1", 1), Effect::gain_keyword_eot("haste")] and TargetSpec::Creature:

When the ability resolves, all_targets will contain the target creature
For add_counters("-1/-1", 1), targets will not be empty (it has the target creature), so it'll put the -1/-1 counters on the TARGET creature instead of self
For gain_keyword_eot("haste"), targets will have the target creature, which is correct

The issue is that add_counters applies to targets when present, but I need the -1/-1 to go on the caster instead. Rather than trying to fix the effect system, I could use Cost::Blight(1) as the cost of the triggered ability instead, which would handle the self-counter naturally. Let me see if the engine supports costs on triggered abilities.

Let me check how triggered ability resolution handles costs:

697:    fn resolve_top_of_stack(&mut self) {
698-        let item = match self.state.stack.pop() {
699-            Some(item) => item,
700-            None => return,
701-        };
702-
703-        if item.countered {
704-            // Countered spells go to graveyard
705-            self.move_card_to_graveyard(item.id, item.controller);
706-            return;
707-        }
708-
709-        // Fizzle check: if the spell/ability has targets and all targets are
710-        // now illegal (left the battlefield, gained hexproof, etc.), it fizzles.
711-        // Note: targets stored as ObjectIds; player targets are tracked separately
712-        // in the SelectedTargets system (targets.rs). This simplified check only
713-        // validates permanent targets on the battlefield.
714-        if !item.targets.is_empty() {
715-            let any_legal = item.targets.iter().any(|&target_id| {
716-                self.state.battlefield.contains(target_id)
717-                    || self.state.stack.get(target_id).is_some()
718-            });
719-            if !any_legal {
720-                // All targets are illegal — fizzle
721-                match &item.kind {
722-                    crate::zones::StackItemKind::Spell { .. } => {
723-                        self.move_card_to_graveyard(item.id, item.controller);
724-                    }
725-                    crate::zones::StackItemKind::Ability { .. } => {
726-                        // Abilities just cease to exist when fizzled
727-                    }
728-                }
729-                return;
730-            }
731-        }
732-
733-        match &item.kind {
734-            crate::zones::StackItemKind::Spell { card } => {
735-                if card.is_permanent_card() {
736-                    // Register abilities from the card
737-                    for ability in &card.abilities {

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