Implemented Idol of Oblivion

Mage.Sets/src/mage/cards/i/IdolOfOblivion.java

@@ -0,0 +1,113 @@
+package mage.cards.i;
+
+import mage.abilities.Ability;
+import mage.abilities.common.ActivateIfConditionActivatedAbility;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.costs.common.SacrificeSourceCost;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.WatcherScope;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.game.permanent.PermanentToken;
+import mage.game.permanent.token.EldraziToken;
+import mage.watchers.Watcher;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class IdolOfOblivion extends CardImpl {
+
+    public IdolOfOblivion(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{2}");
+
+        // {T}: Draw a card. Activate this ability only if you created a token this turn.
+        this.addAbility(new ActivateIfConditionActivatedAbility(
+                Zone.BATTLEFIELD, new DrawCardSourceControllerEffect(1),
+                new TapSourceCost(), IdolOfOblivionCondition.instance
+        ));
+
+        // {8}, {T}, Sacrifice Idol of Oblivion: Create 10/10 colorless Eldrazi creature token.
+        Ability ability = new SimpleActivatedAbility(
+                new CreateTokenEffect(new EldraziToken()), new GenericManaCost(8)
+        );
+        ability.addCost(new TapSourceCost());
+        ability.addCost(new SacrificeSourceCost());
+        this.addAbility(ability, new IdolOfOblivionWatcher());
+    }
+
+    private IdolOfOblivion(final IdolOfOblivion card) {
+        super(card);
+    }
+
+    @Override
+    public IdolOfOblivion copy() {
+        return new IdolOfOblivion(this);
+    }
+}
+
+enum IdolOfOblivionCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        IdolOfOblivionWatcher watcher = game.getState().getWatcher(IdolOfOblivionWatcher.class);
+        return watcher != null && watcher.tokenEntered(source.getControllerId());
+    }
+
+    @Override
+    public String toString() {
+        return "if you created a token this turn";
+    }
+}
+
+class IdolOfOblivionWatcher extends Watcher {
+
+    private final Set<UUID> playerIds = new HashSet<>();
+
+    IdolOfOblivionWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    private IdolOfOblivionWatcher(final IdolOfOblivionWatcher watcher) {
+        super(watcher);
+        playerIds.addAll(watcher.playerIds);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.ENTERS_THE_BATTLEFIELD) {
+            return;
+        }
+        Permanent permanent = game.getPermanent(event.getTargetId());
+        if (permanent instanceof PermanentToken) {
+            playerIds.add(permanent.getControllerId());
+        }
+    }
+
+    @Override
+    public void reset() {
+        playerIds.clear();
+    }
+
+    @Override
+    public IdolOfOblivionWatcher copy() {
+        return new IdolOfOblivionWatcher(this);
+    }
+
+    boolean tokenEntered(UUID playerId) {
+        return playerIds.contains(playerId);
+    }
+}

Mage.Sets/src/mage/sets/Commander2019Edition.java

@@ -94,6 +94,7 @@ public final class Commander2019Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Hooded Hydra", 172, Rarity.MYTHIC, mage.cards.h.HoodedHydra.class));
         cards.add(new SetCardInfo("Hour of Reckoning", 65, Rarity.RARE, mage.cards.h.HourOfReckoning.class));
         cards.add(new SetCardInfo("Icefeather Aven", 194, Rarity.UNCOMMON, mage.cards.i.IcefeatherAven.class));
+        cards.add(new SetCardInfo("Idol of Oblivion", 55, Rarity.RARE, mage.cards.i.IdolOfOblivion.class));
         cards.add(new SetCardInfo("Ignite the Future", 27, Rarity.RARE, mage.cards.i.IgniteTheFuture.class));
         cards.add(new SetCardInfo("Increasing Devotion", 66, Rarity.RARE, mage.cards.i.IncreasingDevotion.class));
         cards.add(new SetCardInfo("Increasing Vengeance", 147, Rarity.RARE, mage.cards.i.IncreasingVengeance.class));