[TLA] Implement Appa, Steadfast Guardian

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

@@ -0,0 +1,70 @@
+package mage.cards.a;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.common.SpellCastControllerTriggeredAbility;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.effects.keyword.AirbendTargetEffect;
+import mage.abilities.keyword.FlashAbility;
+import mage.abilities.keyword.FlyingAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterPermanent;
+import mage.filter.StaticFilters;
+import mage.filter.common.FilterNonlandPermanent;
+import mage.filter.predicate.mageobject.AnotherPredicate;
+import mage.game.permanent.token.AllyToken;
+import mage.target.TargetPermanent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class AppaSteadfastGuardian extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterNonlandPermanent("other target nonland permanents you control");
+
+    static {
+        filter.add(AnotherPredicate.instance);
+        filter.add(TargetController.YOU.getControllerPredicate());
+    }
+
+    public AppaSteadfastGuardian(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{W}{W}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.BISON);
+        this.subtype.add(SubType.ALLY);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(4);
+
+        // Flash
+        this.addAbility(FlashAbility.getInstance());
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // When Appa enters, airbend any number of other target nonland permanents you control.
+        Ability ability = new EntersBattlefieldTriggeredAbility(new AirbendTargetEffect());
+        ability.addTarget(new TargetPermanent(0, Integer.MAX_VALUE, filter));
+        this.addAbility(ability);
+
+        // Whenever you cast a spell from exile, create a 1/1 white Ally creature token.
+        this.addAbility(new SpellCastControllerTriggeredAbility(
+                Zone.BATTLEFIELD, new CreateTokenEffect(new AllyToken()), StaticFilters.FILTER_SPELL_A,
+                false, SetTargetPointer.NONE, Zone.EXILED
+        ));
+    }
+
+    private AppaSteadfastGuardian(final AppaSteadfastGuardian card) {
+        super(card);
+    }
+
+    @Override
+    public AppaSteadfastGuardian copy() {
+        return new AppaSteadfastGuardian(this);
+    }
+}

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

@@ -21,6 +21,8 @@ public final class AvatarTheLastAirbender extends ExpansionSet {
         this.rotationSet = true;
         this.hasBasicLands = false; // temporary
 
+        cards.add(new SetCardInfo("Appa, Steadfast Guardian", 10, Rarity.MYTHIC, mage.cards.a.AppaSteadfastGuardian.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Appa, Steadfast Guardian", 316, Rarity.MYTHIC, mage.cards.a.AppaSteadfastGuardian.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Avatar Enthusiasts", 11, Rarity.COMMON, mage.cards.a.AvatarEnthusiasts.class));
         cards.add(new SetCardInfo("Earthbending Lesson", 176, Rarity.COMMON, mage.cards.e.EarthbendingLesson.class));
         cards.add(new SetCardInfo("Fire Nation Attacks", 133, Rarity.UNCOMMON, mage.cards.f.FireNationAttacks.class));

Mage/src/main/java/mage/abilities/effects/keyword/AirbendTargetEffect.java

@@ -0,0 +1,122 @@
+package mage.abilities.effects.keyword;
+
+import mage.abilities.Ability;
+import mage.abilities.Mode;
+import mage.abilities.costs.Cost;
+import mage.abilities.costs.Costs;
+import mage.abilities.costs.CostsImpl;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.AsThoughEffectImpl;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.Card;
+import mage.cards.Cards;
+import mage.cards.CardsImpl;
+import mage.constants.AsThoughEffectType;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.targetpointer.FixedTarget;
+
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+/**
+ * @author TheElk801
+ */
+public class AirbendTargetEffect extends OneShotEffect {
+
+    public AirbendTargetEffect() {
+        super(Outcome.Benefit);
+    }
+
+    private AirbendTargetEffect(final AirbendTargetEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public AirbendTargetEffect copy() {
+        return new AirbendTargetEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        Set<Permanent> permanents = this
+                .getTargetPointer()
+                .getTargets(game, source)
+                .stream()
+                .map(game::getPermanent)
+                .filter(Objects::nonNull)
+                .collect(Collectors.toSet());
+        if (player == null || permanents.isEmpty()) {
+            return false;
+        }
+        player.moveCards(permanents, Zone.EXILED, source, game);
+        Cards cards = new CardsImpl(permanents);
+        cards.retainZone(Zone.EXILED, game);
+        for (Card card : cards.getCards(game)) {
+            game.addEffect(new AirbendingCastEffect(card, game), source);
+        }
+        game.fireEvent(GameEvent.getEvent(
+                GameEvent.EventType.AIRBENDED, source.getSourceId(),
+                source, source.getControllerId()
+        ));
+        return true;
+    }
+
+    @Override
+    public String getText(Mode mode) {
+        if (staticText != null && !staticText.isEmpty()) {
+            return staticText;
+        }
+        return "airbend " + getTargetPointer().describeTargets(mode.getTargets(), "");
+    }
+}
+
+class AirbendingCastEffect extends AsThoughEffectImpl {
+
+    AirbendingCastEffect(Card card, Game game) {
+        super(AsThoughEffectType.CAST_FROM_NOT_OWN_HAND_ZONE, Duration.Custom, Outcome.AIDontUseIt);
+        this.setTargetPointer(new FixedTarget(card, game));
+    }
+
+    private AirbendingCastEffect(final AirbendingCastEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return true;
+    }
+
+    @Override
+    public AirbendingCastEffect copy() {
+        return new AirbendingCastEffect(this);
+    }
+
+    @Override
+    public boolean applies(UUID objectId, Ability source, UUID affectedControllerId, Game game) {
+        Card card = game.getCard(getTargetPointer().getFirst(game, source));
+        if (card == null) {
+            discard();
+            return false;
+        }
+        if (!card.getId().equals(objectId) || !card.isOwnedBy(affectedControllerId)) {
+            return false;
+        }
+        Player player = game.getPlayer(affectedControllerId);
+        if (player == null) {
+            return false;
+        }
+        Costs<Cost> newCosts = new CostsImpl<>();
+        newCosts.addAll(card.getSpellAbility().getCosts());
+        player.setCastSourceIdWithAlternateMana(card.getId(), new ManaCostsImpl<>("{2}"), newCosts);
+        return true;
+    }
+}

Mage/src/main/java/mage/constants/SubType.java

@@ -109,6 +109,7 @@ public enum SubType {
     BEHOLDER("Beholder", SubTypeSet.CreatureType),
     BERSERKER("Berserker", SubTypeSet.CreatureType),
     BIRD("Bird", SubTypeSet.CreatureType),
+    BISON("Bison", SubTypeSet.CreatureType),
     BITH("Bith", SubTypeSet.CreatureType, true), // Star Wars
     BLINKMOTH("Blinkmoth", SubTypeSet.CreatureType),
     BOAR("Boar", SubTypeSet.CreatureType),

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

@@ -696,6 +696,7 @@ public class GameEvent implements Serializable {
          */
         PAY_SACRIFICE_COST,
         EARTHBENDED,
+        AIRBENDED,
         FIREBENDED,
         // custom events - must store some unique data to track
         CUSTOM_EVENT;

Mage/src/main/java/mage/game/permanent/token/AllyToken.java

@@ -0,0 +1,29 @@
+package mage.game.permanent.token;
+
+import mage.MageInt;
+import mage.constants.CardType;
+import mage.constants.SubType;
+
+/**
+ * @author TheElk801
+ */
+public final class AllyToken extends TokenImpl {
+
+    public AllyToken() {
+        super("Ally Token", "1/1 white Ally creature token");
+        cardType.add(CardType.CREATURE);
+        color.setWhite(true);
+        subtype.add(SubType.ALLY);
+        power = new MageInt(1);
+        toughness = new MageInt(1);
+    }
+
+    private AllyToken(final AllyToken token) {
+        super(token);
+    }
+
+    public AllyToken copy() {
+        return new AllyToken(this);
+    }
+
+}