From 4f62890cae8582b1ecbb0988590ddb22140c5771 Mon Sep 17 00:00:00 2001
From: theelk801 <theelk801@gmail.com>
Date: Sat, 3 Jun 2023 20:58:16 -0400
Subject: [PATCH] [LTR] Implement One Ring to Rule Them All

---
 .../mage/cards/o/OneRingToRuleThemAll.java    | 134 ++++++++++++++++++
 .../TheLordOfTheRingsTalesOfMiddleEarth.java  |   1 +
 2 files changed, 135 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/o/OneRingToRuleThemAll.java

diff --git a/Mage.Sets/src/mage/cards/o/OneRingToRuleThemAll.java b/Mage.Sets/src/mage/cards/o/OneRingToRuleThemAll.java
new file mode 100644
index 0000000000..640da0aeb1
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/o/OneRingToRuleThemAll.java
@@ -0,0 +1,134 @@
+package mage.cards.o;
+
+import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.Ability;
+import mage.abilities.common.SagaAbility;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.DestroyAllEffect;
+import mage.abilities.effects.common.MillCardsEachPlayerEffect;
+import mage.abilities.effects.keyword.TheRingTemptsYouEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterPermanent;
+import mage.filter.StaticFilters;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.filter.predicate.Predicates;
+import mage.game.Game;
+import mage.players.Player;
+
+import java.util.Objects;
+import java.util.Optional;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class OneRingToRuleThemAll extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterCreaturePermanent("nonlegendary creatures");
+
+    static {
+        filter.add(Predicates.not(SuperType.LEGENDARY.getPredicate()));
+    }
+
+    public OneRingToRuleThemAll(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{2}{B}{B}");
+
+        this.subtype.add(SubType.SAGA);
+
+        // (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
+        SagaAbility sagaAbility = new SagaAbility(this);
+
+        // I -- The Ring tempts you, then each player mills cards equal to your Ring-bearer's power.
+        sagaAbility.addChapterEffect(
+                this, SagaChapter.CHAPTER_I, new TheRingTemptsYouEffect(),
+                new MillCardsEachPlayerEffect(
+                        OneRingToRuleThemAllValue.instance, TargetController.EACH_PLAYER
+                ).setText(", then each player mills cards equal to your Ring-bearer's power")
+        );
+
+        // II -- Destroy all nonlegendary creatures.
+        sagaAbility.addChapterEffect(this, SagaChapter.CHAPTER_II, new DestroyAllEffect(filter));
+
+        // III -- Each opponent loses 1 life for each creature card in that player's graveyard.
+        sagaAbility.addChapterEffect(this, SagaChapter.CHAPTER_III, new OneRingToRuleThemAllEffect());
+
+        this.addAbility(sagaAbility);
+    }
+
+    private OneRingToRuleThemAll(final OneRingToRuleThemAll card) {
+        super(card);
+    }
+
+    @Override
+    public OneRingToRuleThemAll copy() {
+        return new OneRingToRuleThemAll(this);
+    }
+}
+
+enum OneRingToRuleThemAllValue implements DynamicValue {
+    instance;
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        return Optional
+                .ofNullable(game.getPlayer(sourceAbility.getControllerId()))
+                .filter(Objects::nonNull)
+                .map(player -> player.getRingBearer(game))
+                .filter(Objects::nonNull)
+                .map(MageObject::getPower)
+                .map(MageInt::getValue)
+                .orElse(0);
+    }
+
+    @Override
+    public OneRingToRuleThemAllValue copy() {
+        return this;
+    }
+
+    @Override
+    public String getMessage() {
+        return "";
+    }
+
+    @Override
+    public String toString() {
+        return "1";
+    }
+}
+
+class OneRingToRuleThemAllEffect extends OneShotEffect {
+
+    OneRingToRuleThemAllEffect() {
+        super(Outcome.Benefit);
+        staticText = "each opponent loses 1 life for each creature card in that player's graveyard";
+    }
+
+    private OneRingToRuleThemAllEffect(final OneRingToRuleThemAllEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public OneRingToRuleThemAllEffect copy() {
+        return new OneRingToRuleThemAllEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        for (UUID playerId : game.getOpponents(source.getControllerId())) {
+            Player player = game.getPlayer(playerId);
+            if (player != null) {
+                player.loseLife(
+                        player.getGraveyard()
+                                .count(StaticFilters.FILTER_CARD_CREATURE, game),
+                        game, source, false
+                );
+            }
+        }
+        return true;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/TheLordOfTheRingsTalesOfMiddleEarth.java b/Mage.Sets/src/mage/sets/TheLordOfTheRingsTalesOfMiddleEarth.java
index 5dae39a632..f7bc6a03f0 100644
--- a/Mage.Sets/src/mage/sets/TheLordOfTheRingsTalesOfMiddleEarth.java
+++ b/Mage.Sets/src/mage/sets/TheLordOfTheRingsTalesOfMiddleEarth.java
@@ -83,6 +83,7 @@ public final class TheLordOfTheRingsTalesOfMiddleEarth extends ExpansionSet {
         cards.add(new SetCardInfo("Nazgul", 100, Rarity.UNCOMMON, mage.cards.n.Nazgul.class));
         cards.add(new SetCardInfo("Oliphaunt", 139, Rarity.COMMON, mage.cards.o.Oliphaunt.class));
         cards.add(new SetCardInfo("Olog-hai Crusher", 140, Rarity.COMMON, mage.cards.o.OlogHaiCrusher.class));
+        cards.add(new SetCardInfo("One Ring to Rule Them All", 102, Rarity.RARE, mage.cards.o.OneRingToRuleThemAll.class));
         cards.add(new SetCardInfo("Pippin's Bravery", 182, Rarity.COMMON, mage.cards.p.PippinsBravery.class));
         cards.add(new SetCardInfo("Plains", 262, Rarity.LAND, mage.cards.basiclands.Plains.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Prince Imrahil the Fair", 219, Rarity.UNCOMMON, mage.cards.p.PrinceImrahilTheFair.class));