[LTR] Implement Witch-king, Bringer of Ruin

Mage.Sets/src/mage/cards/w/WitchKingBringerOfRuin.java

@@ -0,0 +1,88 @@
+package mage.cards.w;
+
+import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.common.AttacksTriggeredAbility;
+import mage.abilities.effects.common.SacrificeEffect;
+import mage.abilities.keyword.FlyingAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SetTargetPointer;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.filter.FilterPermanent;
+import mage.filter.StaticFilters;
+import mage.filter.common.FilterControlledCreaturePermanent;
+import mage.filter.predicate.ObjectSourcePlayer;
+import mage.filter.predicate.ObjectSourcePlayerPredicate;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class WitchKingBringerOfRuin extends CardImpl {
+
+    private static final FilterPermanent filter
+            = new FilterControlledCreaturePermanent("creature with the least power among creatures you control");
+
+    static {
+        filter.add(WitchKingBringerOfRuinPredicate.instance);
+    }
+
+    public WitchKingBringerOfRuin(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{B}{B}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.WRAITH);
+        this.subtype.add(SubType.NOBLE);
+        this.power = new MageInt(5);
+        this.toughness = new MageInt(3);
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // Whenever Witch-king, Bringer of Ruin attacks, defending player sacrifices a creature with the least power among creatures they control.
+        this.addAbility(new AttacksTriggeredAbility(
+                new SacrificeEffect(filter, 1, "")
+                        .setText("defending player sacrifices a creature " +
+                                "with the least power among creatures they control"),
+                false, null, SetTargetPointer.PLAYER
+        ));
+    }
+
+    private WitchKingBringerOfRuin(final WitchKingBringerOfRuin card) {
+        super(card);
+    }
+
+    @Override
+    public WitchKingBringerOfRuin copy() {
+        return new WitchKingBringerOfRuin(this);
+    }
+}
+
+enum WitchKingBringerOfRuinPredicate implements ObjectSourcePlayerPredicate<Permanent> {
+    instance;
+
+    @Override
+    public boolean apply(ObjectSourcePlayer<Permanent> input, Game game) {
+        return input
+                .getObject()
+                .getPower()
+                .getValue()
+                <= game
+                .getBattlefield()
+                .getActivePermanents(
+                        StaticFilters.FILTER_CONTROLLED_CREATURE,
+                        input.getPlayerId(), input.getSource(), game
+                )
+                .stream()
+                .map(MageObject::getPower)
+                .mapToInt(MageInt::getValue)
+                .min()
+                .orElse(0);
+    }
+}

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

@@ -215,6 +215,7 @@ public final class TheLordOfTheRingsTalesOfMiddleEarth extends ExpansionSet {
         cards.add(new SetCardInfo("Warbeast of Gorgoroth", 152, Rarity.COMMON, mage.cards.w.WarbeastOfGorgoroth.class));
         cards.add(new SetCardInfo("Westfold Rider", 37, Rarity.COMMON, mage.cards.w.WestfoldRider.class));
         cards.add(new SetCardInfo("Willow-Wind", 76, Rarity.COMMON, mage.cards.w.WillowWind.class));
+        cards.add(new SetCardInfo("Witch-king, Bringer of Ruin", 293, Rarity.RARE, mage.cards.w.WitchKingBringerOfRuin.class));
         cards.add(new SetCardInfo("Wizard's Rockets", 252, Rarity.COMMON, mage.cards.w.WizardsRockets.class));
         cards.add(new SetCardInfo("Wose Pathfinder", 190, Rarity.COMMON, mage.cards.w.WosePathfinder.class));
         cards.add(new SetCardInfo("You Cannot Pass!", 38, Rarity.UNCOMMON, mage.cards.y.YouCannotPass.class));