[LCI] Implement Roaming Throne

Mage.Sets/src/mage/cards/r/RoamingThrone.java

@@ -0,0 +1,111 @@
+package mage.cards.r;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.AsEntersBattlefieldAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.abilities.effects.common.ChooseCreatureTypeEffect;
+import mage.abilities.effects.common.continuous.AddChosenSubtypeEffect;
+import mage.abilities.effects.common.enterAttribute.EnterAttributeAddChosenSubtypeEffect;
+import mage.abilities.keyword.WardAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterControlledCreaturePermanent;
+import mage.filter.predicate.mageobject.AnotherPredicate;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.NumberOfTriggersEvent;
+import mage.game.permanent.Permanent;
+
+import java.util.UUID;
+
+/**
+ * @author Susucr
+ */
+public final class RoamingThrone extends CardImpl {
+
+    public RoamingThrone(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT, CardType.CREATURE}, "{4}");
+
+        this.subtype.add(SubType.GOLEM);
+        this.power = new MageInt(4);
+        this.toughness = new MageInt(4);
+
+        // Ward {2}
+        this.addAbility(new WardAbility(new ManaCostsImpl<>("{2}"), false));
+
+        // As Roaming Throne enters the battlefield, choose a creature type.
+        Ability ability = new AsEntersBattlefieldAbility(new ChooseCreatureTypeEffect(Outcome.Benefit));
+
+        // Roaming Throne is the chosen type in addition to its other types.
+        ability.addEffect(new EnterAttributeAddChosenSubtypeEffect());
+        this.addAbility(ability);
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new AddChosenSubtypeEffect()));
+
+        // If a triggered ability of another creature you control of the chosen type triggers, it triggers an additional time.
+        this.addAbility(new SimpleStaticAbility(new RoamingThroneReplacementEffect()));
+    }
+
+    private RoamingThrone(final RoamingThrone card) {
+        super(card);
+    }
+
+    @Override
+    public RoamingThrone copy() {
+        return new RoamingThrone(this);
+    }
+}
+
+class RoamingThroneReplacementEffect extends ReplacementEffectImpl {
+
+    private static final FilterPermanent filter = new FilterControlledCreaturePermanent();
+
+    static {
+        filter.add(AnotherPredicate.instance);
+    }
+
+    RoamingThroneReplacementEffect() {
+        super(Duration.WhileOnBattlefield, Outcome.Benefit);
+        staticText = "If a triggered ability of another creature you control of the chosen type triggers, "
+                + "it triggers an additional time";
+    }
+
+    private RoamingThroneReplacementEffect(final RoamingThroneReplacementEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public RoamingThroneReplacementEffect copy() {
+        return new RoamingThroneReplacementEffect(this);
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.NUMBER_OF_TRIGGERS;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        if (!(event instanceof NumberOfTriggersEvent)) {
+            return false;
+        }
+        NumberOfTriggersEvent numberOfTriggersEvent = (NumberOfTriggersEvent) event;
+        if (!source.isControlledBy(event.getPlayerId())) {
+            return false;
+        }
+        Permanent permanentSource = game.getPermanentOrLKIBattlefield(numberOfTriggersEvent.getSourceId());
+        return permanentSource != null
+                && filter.match(permanentSource, source.getControllerId(), source, game)
+                && permanentSource.hasSubtype(ChooseCreatureTypeEffect.getChosenCreatureType(source.getSourceId(), game), game);
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        event.setAmount(event.getAmount() + 1);
+        return false;
+    }
+}

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

@@ -246,6 +246,7 @@ public final class TheLostCavernsOfIxalan extends ExpansionSet {
         cards.add(new SetCardInfo("Restless Vents", 284, Rarity.RARE, mage.cards.r.RestlessVents.class));
         cards.add(new SetCardInfo("River Herald Guide", 209, Rarity.COMMON, mage.cards.r.RiverHeraldGuide.class));
         cards.add(new SetCardInfo("River Herald Scout", 72, Rarity.COMMON, mage.cards.r.RiverHeraldScout.class));
+        cards.add(new SetCardInfo("Roaming Throne", 258, Rarity.RARE, mage.cards.r.RoamingThrone.class));
         cards.add(new SetCardInfo("Roar of the Fifth People", 189, Rarity.MYTHIC, mage.cards.r.RoarOfTheFifthPeople.class));
         cards.add(new SetCardInfo("Ruin-Lurker Bat", 33, Rarity.UNCOMMON, mage.cards.r.RuinLurkerBat.class));
         cards.add(new SetCardInfo("Rumbling Rockslide", 163, Rarity.COMMON, mage.cards.r.RumblingRockslide.class));