From 1da557534eb4f8486a8d36173c715051d30540ef Mon Sep 17 00:00:00 2001
From: theelk801 <theelk801@gmail.com>
Date: Mon, 31 Mar 2025 16:21:41 -0400
Subject: [PATCH] [TDM] Implement Thunder of Unity

---
 .../src/mage/cards/t/ThunderOfUnity.java      | 83 +++++++++++++++++++
 .../src/mage/sets/TarkirDragonstorm.java      |  1 +
 2 files changed, 84 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/t/ThunderOfUnity.java

diff --git a/Mage.Sets/src/mage/cards/t/ThunderOfUnity.java b/Mage.Sets/src/mage/cards/t/ThunderOfUnity.java
new file mode 100644
index 00000000000..e1619ec66d4
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/t/ThunderOfUnity.java
@@ -0,0 +1,83 @@
+package mage.cards.t;
+
+import mage.abilities.DelayedTriggeredAbility;
+import mage.abilities.common.SagaAbility;
+import mage.abilities.effects.common.*;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.constants.SagaChapter;
+import mage.constants.SubType;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class ThunderOfUnity extends CardImpl {
+
+    public ThunderOfUnity(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{R}{W}{B}");
+
+        this.subtype.add(SubType.SAGA);
+
+        // (As this Saga enters step, add a lore counter. Sacrifice after III.)
+        SagaAbility sagaAbility = new SagaAbility(this);
+
+        // I -- You draw two cards and you lose 2 life.
+        sagaAbility.addChapterEffect(
+                this, SagaChapter.CHAPTER_I,
+                new DrawCardSourceControllerEffect(2, true),
+                new LoseLifeSourceControllerEffect(2).concatBy("and")
+        );
+
+        // II, III -- Whenever a creature you control enters this turn, each opponent loses 1 life and you gain 1 life.
+        sagaAbility.addChapterEffect(
+                this, SagaChapter.CHAPTER_II, SagaChapter.CHAPTER_III,
+                new CreateDelayedTriggeredAbilityEffect(new ThunderOfUnityTriggeredAbility())
+        );
+        this.addAbility(sagaAbility);
+    }
+
+    private ThunderOfUnity(final ThunderOfUnity card) {
+        super(card);
+    }
+
+    @Override
+    public ThunderOfUnity copy() {
+        return new ThunderOfUnity(this);
+    }
+}
+
+class ThunderOfUnityTriggeredAbility extends DelayedTriggeredAbility {
+
+    ThunderOfUnityTriggeredAbility() {
+        super(new LoseLifeOpponentsEffect(1), Duration.EndOfTurn, false, false);
+        this.addEffect(new GainLifeEffect(1).concatBy("and"));
+        this.setTriggerPhrase("Whenever a creature you control enters this turn, ");
+    }
+
+    private ThunderOfUnityTriggeredAbility(final ThunderOfUnityTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public ThunderOfUnityTriggeredAbility copy() {
+        return new ThunderOfUnityTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        Permanent permanent = game.getPermanent(event.getTargetId());
+        return permanent != null && permanent.isCreature(game) && permanent.isControlledBy(getControllerId());
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/TarkirDragonstorm.java b/Mage.Sets/src/mage/sets/TarkirDragonstorm.java
index 281702bf3f3..c4938d72957 100644
--- a/Mage.Sets/src/mage/sets/TarkirDragonstorm.java
+++ b/Mage.Sets/src/mage/sets/TarkirDragonstorm.java
@@ -200,6 +200,7 @@ public final class TarkirDragonstorm extends ExpansionSet {
         cards.add(new SetCardInfo("Temur Tawnyback", 229, Rarity.COMMON, mage.cards.t.TemurTawnyback.class));
         cards.add(new SetCardInfo("The Sibsig Ceremony", 91, Rarity.RARE, mage.cards.t.TheSibsigCeremony.class));
         cards.add(new SetCardInfo("Thornwood Falls", 269, Rarity.COMMON, mage.cards.t.ThornwoodFalls.class));
+        cards.add(new SetCardInfo("Thunder of Unity", 231, Rarity.RARE, mage.cards.t.ThunderOfUnity.class));
         cards.add(new SetCardInfo("Trade Route Envoy", 163, Rarity.COMMON, mage.cards.t.TradeRouteEnvoy.class));
         cards.add(new SetCardInfo("Tranquil Cove", 270, Rarity.COMMON, mage.cards.t.TranquilCove.class));
         cards.add(new SetCardInfo("Twin Bolt", 128, Rarity.COMMON, mage.cards.t.TwinBolt.class));