From 252707f947b5a1c47809df18bb8d5446792268ad Mon Sep 17 00:00:00 2001
From: theelk801 <theelk801@gmail.com>
Date: Tue, 25 Nov 2025 12:30:32 -0500
Subject: [PATCH] [TLA] Implement Crashing Wave

---
 Mage.Sets/src/mage/cards/c/CrashingWave.java  | 92 +++++++++++++++++++
 .../src/mage/sets/AvatarTheLastAirbender.java |  2 +
 2 files changed, 94 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/c/CrashingWave.java

diff --git a/Mage.Sets/src/mage/cards/c/CrashingWave.java b/Mage.Sets/src/mage/cards/c/CrashingWave.java
new file mode 100644
index 00000000000..e3695a1bebb
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/c/CrashingWave.java
@@ -0,0 +1,92 @@
+package mage.cards.c;
+
+import mage.abilities.Ability;
+import mage.abilities.costs.common.WaterbendCost;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.TapTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.counters.CounterType;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterOpponentsCreaturePermanent;
+import mage.filter.predicate.permanent.TappedPredicate;
+import mage.game.Game;
+import mage.players.Player;
+import mage.target.common.TargetCreaturePermanent;
+import mage.target.common.TargetPermanentAmount;
+import mage.target.targetadjustment.XTargetsCountAdjuster;
+
+import java.util.Optional;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class CrashingWave extends CardImpl {
+
+    public CrashingWave(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{U}{U}");
+
+        // As an additional cost to cast this spell, waterbend {X}.
+        this.getSpellAbility().addCost(new WaterbendCost("{X}"));
+
+        // Tap up to X target creatures, then distribute three stun counters among tapped creatures your opponents control.
+        this.getSpellAbility().addEffect(new TapTargetEffect("tap up to X target creatures"));
+        this.getSpellAbility().addTarget(new TargetCreaturePermanent(0, 1));
+        this.getSpellAbility().setTargetAdjuster(new XTargetsCountAdjuster());
+        this.getSpellAbility().addEffect(new CrashingWaveEffect());
+    }
+
+    private CrashingWave(final CrashingWave card) {
+        super(card);
+    }
+
+    @Override
+    public CrashingWave copy() {
+        return new CrashingWave(this);
+    }
+}
+
+class CrashingWaveEffect extends OneShotEffect {
+
+    private static final FilterPermanent filter = new FilterOpponentsCreaturePermanent("tapped creatures your opponents control");
+
+    static {
+        filter.add(TappedPredicate.TAPPED);
+    }
+
+    CrashingWaveEffect() {
+        super(Outcome.Benefit);
+        staticText = ", then distribute three stun counters among tapped creatures your opponents control";
+    }
+
+    private CrashingWaveEffect(final CrashingWaveEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public CrashingWaveEffect copy() {
+        return new CrashingWaveEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null || !game.getBattlefield().contains(filter, source.getControllerId(), source, game, 1)) {
+            return false;
+        }
+        TargetPermanentAmount target = new TargetPermanentAmount(3, 1, filter);
+        target.withNotTarget(true);
+        player.chooseTarget(outcome, target, source, game);
+        for (UUID targetId : target.getTargets()) {
+            Optional.ofNullable(targetId)
+                    .map(game::getPermanent)
+                    .ifPresent(permanent -> permanent.addCounters(
+                            CounterType.STUN.createInstance(target.getTargetAmount(targetId)), source, game
+                    ));
+        }
+        return true;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java b/Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java
index 43e405dff75..9ca364b9e09 100644
--- a/Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java
+++ b/Mage.Sets/src/mage/sets/AvatarTheLastAirbender.java
@@ -116,6 +116,8 @@ public final class AvatarTheLastAirbender extends ExpansionSet {
         cards.add(new SetCardInfo("Combustion Technique", 301, Rarity.UNCOMMON, mage.cards.c.CombustionTechnique.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Compassionate Healer", 13, Rarity.COMMON, mage.cards.c.CompassionateHealer.class));
         cards.add(new SetCardInfo("Corrupt Court Official", 92, Rarity.COMMON, mage.cards.c.CorruptCourtOfficial.class));
+        cards.add(new SetCardInfo("Crashing Wave", 300, Rarity.UNCOMMON, mage.cards.c.CrashingWave.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Crashing Wave", 47, Rarity.UNCOMMON, mage.cards.c.CrashingWave.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Crescent Island Temple", 129, Rarity.UNCOMMON, mage.cards.c.CrescentIslandTemple.class));
         cards.add(new SetCardInfo("Cruel Administrator", 213, Rarity.UNCOMMON, mage.cards.c.CruelAdministrator.class));
         cards.add(new SetCardInfo("Cunning Maneuver", 130, Rarity.COMMON, mage.cards.c.CunningManeuver.class));