[OTJ] Implement Ertha Jo, Frontier Mentor

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

@@ -0,0 +1,121 @@
+package mage.cards.e;
+
+import mage.MageInt;
+import mage.MageObject;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.effects.common.CopyStackObjectEffect;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.constants.Zone;
+import mage.filter.FilterStackObject;
+import mage.filter.StaticFilters;
+import mage.filter.predicate.ObjectSourcePlayer;
+import mage.filter.predicate.ObjectSourcePlayerPredicate;
+import mage.filter.predicate.mageobject.TargetsPermanentPredicate;
+import mage.filter.predicate.mageobject.TargetsPlayerPredicate;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.token.MercenaryToken;
+import mage.game.stack.StackObject;
+import mage.target.common.TargetAnyTarget;
+
+import java.util.UUID;
+
+/**
+ * @author Susucr
+ */
+public final class ErthaJoFrontierMentor extends CardImpl {
+
+    public ErthaJoFrontierMentor(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{R}{W}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.KOR);
+        this.subtype.add(SubType.ADVISOR);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(4);
+
+        // When Ertha Jo, Frontier Mentor enters the battlefield, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
+        this.addAbility(new EntersBattlefieldTriggeredAbility(new CreateTokenEffect(new MercenaryToken())));
+
+        // Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy.
+        this.addAbility(new ErthaJoFrontierMentorTriggeredAbility());
+    }
+
+    private ErthaJoFrontierMentor(final ErthaJoFrontierMentor card) {
+        super(card);
+    }
+
+    @Override
+    public ErthaJoFrontierMentor copy() {
+        return new ErthaJoFrontierMentor(this);
+    }
+}
+
+// Some abstract type is confused there, so not using Predicates.or
+enum ErthaJoFrontierMentorPredicate implements ObjectSourcePlayerPredicate<MageObject> {
+    instance;
+
+    private static final TargetsPermanentPredicate permanentPredicate =
+            new TargetsPermanentPredicate(StaticFilters.FILTER_PERMANENT_CREATURE);
+
+    private static final TargetsPlayerPredicate playerPredicate = new TargetsPlayerPredicate();
+
+    @Override
+    public boolean apply(ObjectSourcePlayer<MageObject> o, Game game) {
+        return permanentPredicate.apply(o, game) || playerPredicate.apply(o, game);
+    }
+
+    @Override
+    public String toString() {
+        return "Or(" + permanentPredicate + ", " + playerPredicate + ')';
+    }
+}
+
+class ErthaJoFrontierMentorTriggeredAbility extends TriggeredAbilityImpl {
+
+    private static final FilterStackObject filter = new FilterStackObject("ability that targets a creature or player");
+
+    static {
+        filter.add(ErthaJoFrontierMentorPredicate.instance);
+    }
+
+    public ErthaJoFrontierMentorTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new CopyStackObjectEffect(), false);
+        this.addTarget(new TargetAnyTarget());
+        setTriggerPhrase("Whenever you activate an ability that targets a creature or player, ");
+    }
+
+    private ErthaJoFrontierMentorTriggeredAbility(final ErthaJoFrontierMentorTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public ErthaJoFrontierMentorTriggeredAbility copy() {
+        return new ErthaJoFrontierMentorTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ACTIVATED_ABILITY;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        StackObject stackObject = game.getStack().getStackObject(event.getSourceId());
+        if (stackObject == null
+                || !event.getPlayerId().equals(getControllerId())
+                || !filter.match(stackObject, getControllerId(), this, game)
+        ) {
+            return false;
+        }
+        // For the copy effect to find.
+        this.getEffects().setValue("stackObject", stackObject);
+        return true;
+    }
+}

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

@@ -76,6 +76,7 @@ public final class OutlawsOfThunderJunction extends ExpansionSet {
         cards.add(new SetCardInfo("Emergent Haunting", 46, Rarity.UNCOMMON, mage.cards.e.EmergentHaunting.class));
         cards.add(new SetCardInfo("Eriette's Lullaby", 10, Rarity.COMMON, mage.cards.e.EriettesLullaby.class));
         cards.add(new SetCardInfo("Eroded Canyon", 256, Rarity.COMMON, mage.cards.e.ErodedCanyon.class));
+        cards.add(new SetCardInfo("Ertha Jo, Frontier Mentor", 203, Rarity.UNCOMMON, mage.cards.e.ErthaJoFrontierMentor.class));
         cards.add(new SetCardInfo("Failed Fording", 47, Rarity.COMMON, mage.cards.f.FailedFording.class));
         cards.add(new SetCardInfo("Fake Your Own Death", 87, Rarity.COMMON, mage.cards.f.FakeYourOwnDeath.class));
         cards.add(new SetCardInfo("Ferocification", 123, Rarity.UNCOMMON, mage.cards.f.Ferocification.class));