[MOM] Implement Etched Host Doombringer

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

@@ -0,0 +1,96 @@
+package mage.cards.e;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.Mode;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.GainLifeEffect;
+import mage.abilities.effects.common.LoseLifeTargetEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.SubType;
+import mage.counters.CounterType;
+import mage.filter.FilterPermanent;
+import mage.filter.StaticFilters;
+import mage.filter.predicate.permanent.ProtectedByOpponentPredicate;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.target.TargetPermanent;
+import mage.target.common.TargetOpponent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class EtchedHostDoombringer extends CardImpl {
+
+    public EtchedHostDoombringer(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{B}");
+
+        this.subtype.add(SubType.PHYREXIAN);
+        this.subtype.add(SubType.DEMON);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(5);
+
+        // When Etched Host Doombringer enters the battlefield, choose one
+        // * Target opponent loses 2 life and you gain 2 life.
+        Ability ability = new EntersBattlefieldTriggeredAbility(new LoseLifeTargetEffect(2));
+        ability.addEffect(new GainLifeEffect(2).concatBy("and"));
+        ability.addTarget(new TargetOpponent());
+        this.addAbility(ability);
+
+        // * Choose target battle. If an opponent protects it, remove three defense counters from it. Otherwise, put three defense counters on it.
+        ability.addMode(new Mode(new EtchedHostDoombringerEffect())
+                .addTarget(new TargetPermanent(StaticFilters.FILTER_PERMANENT_BATTLE)));
+    }
+
+    private EtchedHostDoombringer(final EtchedHostDoombringer card) {
+        super(card);
+    }
+
+    @Override
+    public EtchedHostDoombringer copy() {
+        return new EtchedHostDoombringer(this);
+    }
+}
+
+class EtchedHostDoombringerEffect extends OneShotEffect {
+
+    private static final FilterPermanent filter = new FilterPermanent();
+
+    static {
+        filter.add(ProtectedByOpponentPredicate.instance);
+    }
+
+    EtchedHostDoombringerEffect() {
+        super(Outcome.Benefit);
+        staticText = "choose target battle. If an opponent protects it, " +
+                "remove three defense counters from it. Otherwise, put three defense counters on it";
+    }
+
+    private EtchedHostDoombringerEffect(final EtchedHostDoombringerEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public EtchedHostDoombringerEffect copy() {
+        return new EtchedHostDoombringerEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
+        if (permanent == null) {
+            return false;
+        }
+        if (!filter.match(permanent, source.getControllerId(), source, game)) {
+            return permanent.addCounters(CounterType.DEFENSE.createInstance(3), source, game);
+        }
+        permanent.removeCounters(CounterType.DEFENSE.createInstance(3), source, game);
+        return true;
+    }
+}

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

@@ -80,6 +80,7 @@ public final class MarchOfTheMachine extends ExpansionSet {
         cards.add(new SetCardInfo("Errant and Giada", 224, Rarity.RARE, mage.cards.e.ErrantAndGiada.class));
         cards.add(new SetCardInfo("Essence of Orthodoxy", 323, Rarity.RARE, mage.cards.e.EssenceOfOrthodoxy.class));
         cards.add(new SetCardInfo("Etched Familiar", 101, Rarity.COMMON, mage.cards.e.EtchedFamiliar.class));
+        cards.add(new SetCardInfo("Etched Host Doombringer", 102, Rarity.COMMON, mage.cards.e.EtchedHostDoombringer.class));
         cards.add(new SetCardInfo("Expedition Lookout", 56, Rarity.COMMON, mage.cards.e.ExpeditionLookout.class));
         cards.add(new SetCardInfo("Eyes of Gitaxias", 57, Rarity.COMMON, mage.cards.e.EyesOfGitaxias.class));
         cards.add(new SetCardInfo("Faerie Mastermind", 58, Rarity.RARE, mage.cards.f.FaerieMastermind.class));

Mage/src/main/java/mage/counters/CounterType.java

@@ -46,6 +46,7 @@ public enum CounterType {
     CURRENCY("currency"),
     DEATH("death"),
     DEATHTOUCH("deathtouch"),
+    DEFENSE("defense"),
     DELAY("delay"),
     DEPLETION("depletion"),
     DESCENT("descent"),

Mage/src/main/java/mage/filter/StaticFilters.java

@@ -763,6 +763,18 @@ public final class StaticFilters {
         FILTER_PERMANENT_PLANESWALKERS.setLockedFilter(true);
     }
 
+    public static final FilterBattlePermanent FILTER_PERMANENT_BATTLE = new FilterBattlePermanent();
+
+    static {
+        FILTER_PERMANENT_BATTLE.setLockedFilter(true);
+    }
+
+    public static final FilterBattlePermanent FILTER_PERMANENT_BATTLES = new FilterBattlePermanent("battles");
+
+    static {
+        FILTER_PERMANENT_BATTLES.setLockedFilter(true);
+    }
+
     public static final FilterNonlandPermanent FILTER_PERMANENT_NON_LAND = new FilterNonlandPermanent();
 
     static {

Mage/src/main/java/mage/filter/common/FilterBattlePermanent.java

@@ -0,0 +1,35 @@
+package mage.filter.common;
+
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.filter.FilterPermanent;
+
+/**
+ * @author TheElk801
+ */
+public class FilterBattlePermanent extends FilterPermanent {
+
+    public FilterBattlePermanent() {
+        this("battle");
+    }
+
+    public FilterBattlePermanent(String name) {
+        super(name);
+        this.add(CardType.BATTLE.getPredicate());
+    }
+
+    public FilterBattlePermanent(SubType subtype, String name) {
+        super(name);
+        this.add(CardType.BATTLE.getPredicate());
+        this.add(subtype.getPredicate());
+    }
+
+    public FilterBattlePermanent(final FilterBattlePermanent filter) {
+        super(filter);
+    }
+
+    @Override
+    public FilterBattlePermanent copy() {
+        return new FilterBattlePermanent(this);
+    }
+}