[TLE] Implement Tale of Momo

Mage.Sets/src/mage/cards/k/KutzilsFlanker.java

@@ -10,24 +10,18 @@ import mage.abilities.effects.common.ExileGraveyardAllTargetPlayerEffect;
 import mage.abilities.effects.common.GainLifeEffect;
 import mage.abilities.effects.common.counter.AddCountersSourceEffect;
 import mage.abilities.effects.keyword.ScryEffect;
+import mage.abilities.hint.Hint;
 import mage.abilities.hint.ValueHint;
 import mage.abilities.keyword.FlashAbility;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
 import mage.constants.CardType;
 import mage.constants.SubType;
-import mage.constants.WatcherScope;
-import mage.constants.Zone;
 import mage.counters.CounterType;
 import mage.game.Game;
-import mage.game.events.GameEvent;
-import mage.game.events.ZoneChangeEvent;
 import mage.target.TargetPlayer;
-import mage.util.CardUtil;
-import mage.watchers.Watcher;
+import mage.watchers.common.CreatureLeftBattlefieldWatcher;
 
-import java.util.HashMap;
-import java.util.Map;
 import java.util.UUID;
 
 /**
@@ -52,8 +46,8 @@ public final class KutzilsFlanker extends CardImpl {
                 new AddCountersSourceEffect(CounterType.P1P1.createInstance(), KutzilsFlankerValue.instance, true)
                         .setText("put a +1/+1 counter on {this} for each creature that left the battlefield under your control this turn")
         );
-        ability.addHint(new ValueHint("Number of creatures that left", KutzilsFlankerValue.instance));
-        ability.addWatcher(new KutzilsFlankerWatcher());
+        ability.addHint(KutzilsFlankerValue.getHint());
+        ability.addWatcher(new CreatureLeftBattlefieldWatcher());
 
         // * You gain 2 life and scry 2.
         ability.addMode(new Mode(
@@ -82,10 +76,15 @@ public final class KutzilsFlanker extends CardImpl {
 
 enum KutzilsFlankerValue implements DynamicValue {
     instance;
+    private static final Hint hint = new ValueHint("Number of creatures that left", KutzilsFlankerValue.instance);
+
+    public static Hint getHint() {
+        return hint;
+    }
 
     @Override
     public int calculate(Game game, Ability sourceAbility, Effect effect) {
-        return KutzilsFlankerWatcher.getNumberCreatureLeft(sourceAbility.getControllerId(), game);
+        return CreatureLeftBattlefieldWatcher.getNumberCreatureLeft(sourceAbility.getControllerId(), game);
     }
 
     @Override
@@ -103,37 +102,3 @@ enum KutzilsFlankerValue implements DynamicValue {
         return "";
     }
 }
-
-
-class KutzilsFlankerWatcher extends Watcher {
-
-    // player -> number of creatures that left the battlefield under that player's control this turn
-    private final Map<UUID, Integer> mapCreaturesLeft = new HashMap<>();
-
-    KutzilsFlankerWatcher() {
-        super(WatcherScope.GAME);
-    }
-
-    @Override
-    public void watch(GameEvent event, Game game) {
-        if (event.getType() != GameEvent.EventType.ZONE_CHANGE) {
-            return;
-        }
-        ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
-        if (zEvent.getFromZone() != Zone.BATTLEFIELD || !zEvent.getTarget().isCreature(game)) {
-            return;
-        }
-        mapCreaturesLeft.compute(zEvent.getTarget().getControllerId(), CardUtil::setOrIncrementValue);
-    }
-
-    @Override
-    public void reset() {
-        super.reset();
-        mapCreaturesLeft.clear();
-    }
-
-    public static int getNumberCreatureLeft(UUID playerId, Game game) {
-        KutzilsFlankerWatcher watcher = game.getState().getWatcher(KutzilsFlankerWatcher.class);
-        return watcher == null ? 0 : watcher.mapCreaturesLeft.getOrDefault(playerId, 0);
-    }
-}

Mage.Sets/src/mage/cards/t/TaleOfMomo.java

@@ -0,0 +1,48 @@
+package mage.cards.t;
+
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.condition.common.CreatureLeftThisTurnCondition;
+import mage.abilities.effects.common.cost.SpellCostReductionSourceEffect;
+import mage.abilities.effects.common.search.SearchLibraryGraveyardPutInHandEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.filter.FilterCard;
+import mage.filter.common.FilterCreatureCard;
+import mage.watchers.common.CreatureLeftBattlefieldWatcher;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class TaleOfMomo extends CardImpl {
+
+    private static final FilterCard filter = new FilterCreatureCard("an Ally creature card");
+
+    static {
+        filter.add(SubType.ALLY.getPredicate());
+    }
+
+    public TaleOfMomo(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{2}{W}");
+
+        // This spell costs {2} less to cast if a creature left the battlefield under your control this turn.
+        this.addAbility(new SimpleStaticAbility(
+                new SpellCostReductionSourceEffect(2, CreatureLeftThisTurnCondition.instance)
+        ).addHint(CreatureLeftThisTurnCondition.getHint()), new CreatureLeftBattlefieldWatcher());
+
+        // Search your library and/or graveyard for an Ally creature card, reveal it, and put it into your hand. If you search your library this way, shuffle.
+        this.getSpellAbility().addEffect(new SearchLibraryGraveyardPutInHandEffect(filter));
+    }
+
+    private TaleOfMomo(final TaleOfMomo card) {
+        super(card);
+    }
+
+    @Override
+    public TaleOfMomo copy() {
+        return new TaleOfMomo(this);
+    }
+}

Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java

@@ -269,6 +269,8 @@ public final class AvatarTheLastAirbenderEternal extends ExpansionSet {
         cards.add(new SetCardInfo("Suspicious Bookcase", 170, Rarity.UNCOMMON, mage.cards.s.SuspiciousBookcase.class));
         cards.add(new SetCardInfo("Swampbenders", 65, Rarity.RARE, mage.cards.s.Swampbenders.class));
         cards.add(new SetCardInfo("Swiftfoot Boots", 317, Rarity.RARE, mage.cards.s.SwiftfootBoots.class));
+        cards.add(new SetCardInfo("Tale of Momo", 176, Rarity.RARE, mage.cards.t.TaleOfMomo.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Tale of Momo", 86, Rarity.RARE, mage.cards.t.TaleOfMomo.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Tarnished Citadel", 59, Rarity.MYTHIC, mage.cards.t.TarnishedCitadel.class));
         cards.add(new SetCardInfo("Taunting Challenge", 46, Rarity.MYTHIC, mage.cards.t.TauntingChallenge.class));
         cards.add(new SetCardInfo("Tectonic Split", 144, Rarity.RARE, mage.cards.t.TectonicSplit.class, NON_FULL_USE_VARIOUS));

Mage/src/main/java/mage/abilities/condition/common/CreatureLeftThisTurnCondition.java

@@ -0,0 +1,30 @@
+package mage.abilities.condition.common;
+
+import mage.abilities.Ability;
+import mage.abilities.condition.Condition;
+import mage.abilities.hint.ConditionHint;
+import mage.abilities.hint.Hint;
+import mage.game.Game;
+import mage.watchers.common.CreatureLeftBattlefieldWatcher;
+
+/**
+ * @author TheElk801
+ */
+public enum CreatureLeftThisTurnCondition implements Condition {
+    instance;
+    private static final Hint hint = new ConditionHint(instance);
+
+    public static Hint getHint() {
+        return hint;
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return CreatureLeftBattlefieldWatcher.getNumberCreatureLeft(source.getControllerId(), game) > 0;
+    }
+
+    @Override
+    public String toString() {
+        return "a creature left the battlefield under your control this turn";
+    }
+}

Mage/src/main/java/mage/watchers/common/CreatureLeftBattlefieldWatcher.java

@@ -0,0 +1,51 @@
+package mage.watchers.common;
+
+import mage.constants.WatcherScope;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeEvent;
+import mage.util.CardUtil;
+import mage.watchers.Watcher;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * @author Susucr
+ */
+public class CreatureLeftBattlefieldWatcher extends Watcher {
+
+    // player -> number of creatures that left the battlefield under that player's control this turn
+    private final Map<UUID, Integer> mapCreaturesLeft = new HashMap<>();
+
+    public CreatureLeftBattlefieldWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.ZONE_CHANGE) {
+            return;
+        }
+        ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
+        if (Zone.BATTLEFIELD.match(zEvent.getFromZone()) && zEvent.getTarget().isCreature(game)) {
+            mapCreaturesLeft.compute(zEvent.getTarget().getControllerId(), CardUtil::setOrIncrementValue);
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        mapCreaturesLeft.clear();
+    }
+
+    public static int getNumberCreatureLeft(UUID playerId, Game game) {
+        return game
+                .getState()
+                .getWatcher(CreatureLeftBattlefieldWatcher.class)
+                .mapCreaturesLeft
+                .getOrDefault(playerId, 0);
+    }
+}