[ONE] Implement Ezuri, Stalker of Spheres

Mage.Sets/src/mage/cards/e/EzuriStalkerOfSpheres.java

@@ -0,0 +1,50 @@
+package mage.cards.e;
+
+import java.util.UUID;
+
+import mage.MageInt;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.common.ProliferatedControllerTriggeredAbility;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.common.DoIfCostPaid;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
+import mage.abilities.effects.common.counter.ProliferateEffect;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+
+/**
+ * @author TheElk801
+ */
+public final class EzuriStalkerOfSpheres extends CardImpl {
+
+    public EzuriStalkerOfSpheres(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{G}{U}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.PHYREXIAN);
+        this.subtype.add(SubType.ELF);
+        this.subtype.add(SubType.WARRIOR);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(3);
+
+        // When Ezuri, Stalker of Spheres enters the battlefield, you may pay {3}. If you do, proliferate twice.
+        this.addAbility(new EntersBattlefieldTriggeredAbility(new DoIfCostPaid(
+                new ProliferateEffect(false), new GenericManaCost(3)
+        ).addEffect(new ProliferateEffect().setText("twice"))));
+
+        // Whenever you proliferate, draw a card.
+        this.addAbility(new ProliferatedControllerTriggeredAbility(new DrawCardSourceControllerEffect(1)));
+    }
+
+    private EzuriStalkerOfSpheres(final EzuriStalkerOfSpheres card) {
+        super(card);
+    }
+
+    @Override
+    public EzuriStalkerOfSpheres copy() {
+        return new EzuriStalkerOfSpheres(this);
+    }
+}

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

@@ -27,6 +27,7 @@ public final class PhyrexiaAllWillBeOne extends ExpansionSet {
         cards.add(new SetCardInfo("Dragonwing Glider", 126, Rarity.RARE, mage.cards.d.DragonwingGlider.class));
         cards.add(new SetCardInfo("Elesh Norn, Mother of Machines", 10, Rarity.MYTHIC, mage.cards.e.EleshNornMotherOfMachines.class));
         cards.add(new SetCardInfo("Evolved Spinoderm", 166, Rarity.RARE, mage.cards.e.EvolvedSpinoderm.class));
+        cards.add(new SetCardInfo("Ezuri, Stalker of Spheres", 201, Rarity.RARE, mage.cards.e.EzuriStalkerOfSpheres.class));
         cards.add(new SetCardInfo("Forest", 276, Rarity.LAND, mage.cards.basiclands.Forest.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Island", 273, Rarity.LAND, mage.cards.basiclands.Island.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Koth, Fire of Resistance", 138, Rarity.RARE, mage.cards.k.KothFireOfResistance.class));

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

@@ -0,0 +1,45 @@
+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 ProliferatedControllerTriggeredAbility extends TriggeredAbilityImpl {
+
+    public ProliferatedControllerTriggeredAbility(Effect effect) {
+        this(effect, false);
+    }
+
+    public ProliferatedControllerTriggeredAbility(Effect effect, boolean optional) {
+        this(Zone.BATTLEFIELD, effect, optional);
+    }
+
+    public ProliferatedControllerTriggeredAbility(Zone zone, Effect effect, boolean optional) {
+        super(zone, effect, optional);
+        setTriggerPhrase("Whenever you proliferate, ");
+    }
+
+    private ProliferatedControllerTriggeredAbility(final ProliferatedControllerTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.PROLIFERATED;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        return isControlledBy(event.getPlayerId());
+    }
+
+    @Override
+    public ProliferatedControllerTriggeredAbility copy() {
+        return new ProliferatedControllerTriggeredAbility(this);
+    }
+}

Mage/src/main/java/mage/abilities/effects/common/counter/ProliferateEffect.java

@@ -6,6 +6,7 @@ import mage.constants.Outcome;
 import mage.counters.Counter;
 import mage.filter.common.FilterPermanentOrPlayerWithCounter;
 import mage.game.Game;
+import mage.game.events.GameEvent;
 import mage.game.permanent.Permanent;
 import mage.players.Player;
 import mage.target.Target;
@@ -86,6 +87,10 @@ public class ProliferateEffect extends OneShotEffect {
                 }
             }
         }
+        game.fireEvent(GameEvent.getEvent(
+                GameEvent.EventType.PROLIFERATED,
+                controller.getId(), source, controller.getId()
+        ));
         return true;
     }
 

Mage/src/main/java/mage/game/events/GameEvent.java

@@ -307,6 +307,7 @@ public class GameEvent implements Serializable {
         CAN_TAKE_MULLIGAN,
         SCRY, SCRIED, SCRY_TO_BOTTOM,
         SURVEIL, SURVEILED,
+        PROLIFERATED,
         FATESEALED,
         FLIP_COIN, COIN_FLIPPED,
         REPLACE_ROLLED_DIE, // for Clam-I-Am workaround only