Implement Amzu, Swarm's Hunger

Mage.Sets/src/mage/cards/a/AmzuSwarmsHunger.java

@@ -0,0 +1,117 @@
+package mage.cards.a;
+
+import java.util.Set;
+import java.util.UUID;
+import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.Ability;
+import mage.abilities.common.CardsLeaveGraveyardTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.effects.common.continuous.GainAbilityControlledEffect;
+import mage.cards.Card;
+import mage.constants.*;
+import mage.abilities.keyword.FlyingAbility;
+import mage.abilities.keyword.MenaceAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.counters.CounterType;
+import mage.filter.FilterPermanent;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.game.permanent.token.IzoniInsectToken;
+
+/**
+ *
+ * @author jimga150
+ */
+public final class AmzuSwarmsHunger extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterPermanent(SubType.INSECT, "Insects");
+
+    public AmzuSwarmsHunger(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{B}{G}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.INSECT);
+        this.subtype.add(SubType.SHAMAN);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(3);
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // Menace
+        this.addAbility(new MenaceAbility());
+
+        // Other Insects you control have menace.
+        this.addAbility(new SimpleStaticAbility(new GainAbilityControlledEffect(
+                new MenaceAbility(false), Duration.WhileOnBattlefield,
+                filter, true
+        )));
+
+        // Whenever one or more cards leave your graveyard, you may create a 1/1 black and green Insect creature token,
+        // then put a number of +1/+1 counters on it equal to the greatest mana value among those cards.
+        // Do this only once each turn.
+        this.addAbility(new CardsLeaveGraveyardTriggeredAbility(new AmzuSwarmsHungerEffect(), true).setDoOnlyOnceEachTurn(true));
+    }
+
+    private AmzuSwarmsHunger(final AmzuSwarmsHunger card) {
+        super(card);
+    }
+
+    @Override
+    public AmzuSwarmsHunger copy() {
+        return new AmzuSwarmsHunger(this);
+    }
+}
+
+// Based on OutlawStitcherEffect
+class AmzuSwarmsHungerEffect extends OneShotEffect {
+
+    AmzuSwarmsHungerEffect() {
+        super(Outcome.PutCreatureInPlay);
+        staticText = "create a 1/1 black and green Insect creature token, " +
+                "then put a number of +1/+1 counters on it equal to the greatest mana value among those cards.";
+    }
+
+    private AmzuSwarmsHungerEffect(final AmzuSwarmsHungerEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public AmzuSwarmsHungerEffect copy() {
+        return new AmzuSwarmsHungerEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        CreateTokenEffect effect = new CreateTokenEffect(new IzoniInsectToken());
+        boolean result = effect.apply(game, source);
+
+        Object cardsLeavingGraveyardObj = this.getValue("cardsLeavingGraveyard");
+        if (!(cardsLeavingGraveyardObj instanceof Set)) {
+            return false;
+        }
+        Set<Card> cardsLeavingGraveyard = (Set<Card>) cardsLeavingGraveyardObj;
+        int xvalue = cardsLeavingGraveyard
+                .stream()
+                .mapToInt(MageObject::getManaValue)
+                .max()
+                .orElse(0);
+
+        if (xvalue <= 0 || !result) {
+            return result;
+        }
+        for (UUID id : effect.getLastAddedTokenIds()) {
+            Permanent token = game.getPermanent(id);
+            if (token == null) {
+                continue;
+            }
+            token.addCounters(CounterType.P1P1.createInstance(xvalue), source.getControllerId(), source, game);
+        }
+        return true;
+    }
+
+}

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

@@ -24,6 +24,7 @@ private RavnicaClueEdition() {
         cards.add(new SetCardInfo("Affectionate Indrik", 155, Rarity.UNCOMMON, mage.cards.a.AffectionateIndrik.class));
         cards.add(new SetCardInfo("Afterlife Insurance", 23, Rarity.UNCOMMON, mage.cards.a.AfterlifeInsurance.class));
         cards.add(new SetCardInfo("Ajani's Pridemate", 52, Rarity.UNCOMMON, mage.cards.a.AjanisPridemate.class));
+        cards.add(new SetCardInfo("Amzu, Swarm's Hunger", 24, Rarity.RARE, mage.cards.a.AmzuSwarmsHunger.class));
         cards.add(new SetCardInfo("Angel of Vitality", 53, Rarity.UNCOMMON, mage.cards.a.AngelOfVitality.class));
         cards.add(new SetCardInfo("Apothecary White", 1, Rarity.RARE, mage.cards.a.ApothecaryWhite.class));
         cards.add(new SetCardInfo("Azorius Arrester", 54, Rarity.COMMON, mage.cards.a.AzoriusArrester.class));