From f481baae98e9aba6130bb317ad86e161f05ab4d0 Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Sun, 5 Jun 2022 00:31:02 -0400
Subject: [PATCH] [CLB] Implemented Wyll's Reversal

---
 Mage.Sets/src/mage/cards/w/WyllsReversal.java | 108 ++++++++++++++++++
 .../CommanderLegendsBattleForBaldursGate.java |   1 +
 2 files changed, 109 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/w/WyllsReversal.java

diff --git a/Mage.Sets/src/mage/cards/w/WyllsReversal.java b/Mage.Sets/src/mage/cards/w/WyllsReversal.java
new file mode 100644
index 00000000000..06096468aca
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/w/WyllsReversal.java
@@ -0,0 +1,108 @@
+package mage.cards.w;
+
+import mage.abilities.Ability;
+import mage.abilities.dynamicvalue.common.GreatestPowerAmongControlledCreaturesValue;
+import mage.abilities.effects.common.InfoEffect;
+import mage.abilities.effects.common.RollDieWithResultTableEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.filter.FilterStackObject;
+import mage.filter.predicate.Predicate;
+import mage.game.Game;
+import mage.game.stack.StackObject;
+import mage.players.Player;
+import mage.target.Target;
+import mage.target.TargetStackObject;
+
+import java.util.List;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class WyllsReversal extends CardImpl {
+
+    private static final FilterStackObject filter
+            = new FilterStackObject("spell or ability with one or more targets");
+
+    static {
+        filter.add(WyllsReversalPredicate.instance);
+    }
+
+    public WyllsReversal(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{2}{R}");
+
+        // Choose target spell or ability with one or more targets. Roll a d20 and add the greatest power among creatures you control.
+        // 1-14 | You may choose new targets for that spell or ability.
+        // 15+ | You may choose new targets for that spell or ability. Then copy it. You may choose new targets for the copy.
+        this.getSpellAbility().addEffect(new WyllsReversalEffect());
+        this.getSpellAbility().addTarget(new TargetStackObject());
+    }
+
+    private WyllsReversal(final WyllsReversal card) {
+        super(card);
+    }
+
+    @Override
+    public WyllsReversal copy() {
+        return new WyllsReversal(this);
+    }
+}
+
+enum WyllsReversalPredicate implements Predicate<StackObject> {
+    instance;
+
+    @Override
+    public boolean apply(StackObject input, Game game) {
+        return !input
+                .getStackAbility()
+                .getTargets()
+                .stream()
+                .map(Target::getTargets)
+                .allMatch(List::isEmpty);
+    }
+}
+
+class WyllsReversalEffect extends RollDieWithResultTableEffect {
+
+    WyllsReversalEffect() {
+        super(20, "choose target spell or ability with one or more targets. " +
+                "Roll a d20 and add the greatest power among creatures you control");
+        this.addTableEntry(1, 14, new InfoEffect("you may choose new targets for that spell or ability"));
+        this.addTableEntry(
+                15, Integer.MAX_VALUE,
+                new InfoEffect("you may choose new targets for that spell or ability. " +
+                        "Then copy it. You may choose new targets for the copy"));
+    }
+
+    private WyllsReversalEffect(final WyllsReversalEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public WyllsReversalEffect copy() {
+        return new WyllsReversalEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        StackObject stackObject = game.getStack().getStackObject(getTargetPointer().getFirst(game, source));
+        if (player == null || stackObject == null) {
+            return false;
+        }
+        int result = player.rollDice(outcome, source, game, 20)
+                + GreatestPowerAmongControlledCreaturesValue.instance.calculate(game, source, this);
+        if (result >= 1) {
+            stackObject.chooseNewTargets(
+                    game, source.getControllerId(), false,
+                    false, null
+            );
+        }
+        if (result >= 14) {
+            stackObject.createCopyOnStack(game, source, source.getControllerId(), true);
+        }
+        return true;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/CommanderLegendsBattleForBaldursGate.java b/Mage.Sets/src/mage/sets/CommanderLegendsBattleForBaldursGate.java
index d20adc37df4..58b3c803b1a 100644
--- a/Mage.Sets/src/mage/sets/CommanderLegendsBattleForBaldursGate.java
+++ b/Mage.Sets/src/mage/sets/CommanderLegendsBattleForBaldursGate.java
@@ -610,6 +610,7 @@ public final class CommanderLegendsBattleForBaldursGate extends ExpansionSet {
         cards.add(new SetCardInfo("Winter Eladrin", 104, Rarity.COMMON, mage.cards.w.WinterEladrin.class));
         cards.add(new SetCardInfo("Wizards of Thay", 105, Rarity.RARE, mage.cards.w.WizardsOfThay.class));
         cards.add(new SetCardInfo("Woe Strider", 774, Rarity.RARE, mage.cards.w.WoeStrider.class));
+        cards.add(new SetCardInfo("Wyll's Reversal", 209, Rarity.RARE, mage.cards.w.WyllsReversal.class));
         cards.add(new SetCardInfo("Wyll, Blade of Frontiers", 208, Rarity.RARE, mage.cards.w.WyllBladeOfFrontiers.class));
         cards.add(new SetCardInfo("Wyrm's Crossing Patrol", 51, Rarity.COMMON, mage.cards.w.WyrmsCrossingPatrol.class));
         cards.add(new SetCardInfo("Xenagos, the Reveler", 853, Rarity.MYTHIC, mage.cards.x.XenagosTheReveler.class));