Implemented Zagoth Mamba

Mage.Sets/src/mage/cards/z/ZagothMamba.java

@@ -0,0 +1,42 @@
+package mage.cards.z;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.MutatesSourceTriggeredAbility;
+import mage.abilities.effects.common.continuous.BoostTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.target.common.TargetOpponentsCreaturePermanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class ZagothMamba extends CardImpl {
+
+    public ZagothMamba(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{B}");
+
+        this.subtype.add(SubType.NIGHTMARE);
+        this.subtype.add(SubType.SNAKE);
+        this.power = new MageInt(1);
+        this.toughness = new MageInt(1);
+
+        // Whenever this creature mutates, target creature an opponent controls gets -2/-2 until end of turn.
+        Ability ability = new MutatesSourceTriggeredAbility(new BoostTargetEffect(-2, -2));
+        ability.addTarget(new TargetOpponentsCreaturePermanent());
+        this.addAbility(ability);
+    }
+
+    private ZagothMamba(final ZagothMamba card) {
+        super(card);
+    }
+
+    @Override
+    public ZagothMamba copy() {
+        return new ZagothMamba(this);
+    }
+}

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

@@ -35,5 +35,6 @@ public final class IkoriaLairOfBehemoths extends ExpansionSet {
         cards.add(new SetCardInfo("Sprite Dragon", 382, Rarity.UNCOMMON, mage.cards.s.SpriteDragon.class));
         cards.add(new SetCardInfo("Titanoth Rex", 377, Rarity.UNCOMMON, mage.cards.t.TitanothRex.class));
         cards.add(new SetCardInfo("Void Beckoner", 373, Rarity.UNCOMMON, mage.cards.v.VoidBeckoner.class));
+        cards.add(new SetCardInfo("Zagoth Mamba", 106, Rarity.UNCOMMON, mage.cards.z.ZagothMamba.class));
     }
 }

Mage/src/main/java/mage/abilities/common/MutatesSourceTriggeredAbility.java

@@ -0,0 +1,47 @@
+package mage.abilities.common;
+
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+
+/**
+ * @author TheElk801
+ */
+public class MutatesSourceTriggeredAbility extends TriggeredAbilityImpl {
+
+    public MutatesSourceTriggeredAbility(Effect effect) {
+        this(effect, false);
+    }
+
+    public MutatesSourceTriggeredAbility(Effect effect, boolean optional) {
+        super(Zone.BATTLEFIELD, effect, optional);
+    }
+
+    private MutatesSourceTriggeredAbility(final MutatesSourceTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public MutatesSourceTriggeredAbility copy() {
+        return new MutatesSourceTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        // TODO: implement this
+        return false;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        // TODO: implement this
+        return false;
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever this creature mutates, " + super.getRule();
+    }
+}