Implemented Mythos of Nethroi

Mage.Sets/src/mage/cards/m/MythosOfNethroi.java

@@ -0,0 +1,73 @@
+package mage.cards.m;
+
+import mage.abilities.Ability;
+import mage.abilities.condition.CompoundCondition;
+import mage.abilities.condition.Condition;
+import mage.abilities.condition.common.ManaWasSpentCondition;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.ColoredManaSymbol;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.target.common.TargetNonlandPermanent;
+import mage.watchers.common.ManaSpentToCastWatcher;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class MythosOfNethroi extends CardImpl {
+
+    public MythosOfNethroi(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{2}{B}");
+
+        // Destroy target nonland permanent if it's a creature or if {G}{W} was spent to cast this spell.
+        this.getSpellAbility().addEffect(new MythosOfNethroiEffect());
+        this.getSpellAbility().addTarget(new TargetNonlandPermanent());
+        this.getSpellAbility().addWatcher(new ManaSpentToCastWatcher());
+    }
+
+    private MythosOfNethroi(final MythosOfNethroi card) {
+        super(card);
+    }
+
+    @Override
+    public MythosOfNethroi copy() {
+        return new MythosOfNethroi(this);
+    }
+}
+
+class MythosOfNethroiEffect extends OneShotEffect {
+
+    private static final Condition condition = new CompoundCondition(
+            new ManaWasSpentCondition(ColoredManaSymbol.G),
+            new ManaWasSpentCondition(ColoredManaSymbol.W)
+    );
+
+    MythosOfNethroiEffect() {
+        super(Outcome.Benefit);
+        staticText = "Destroy target nonland permanent if it's a creature or if {G}{W} was spent to cast this spell.";
+    }
+
+    private MythosOfNethroiEffect(final MythosOfNethroiEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public MythosOfNethroiEffect copy() {
+        return new MythosOfNethroiEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanent(source.getFirstTarget());
+        if (permanent == null || (!permanent.isCreature() && !condition.apply(game, source))) {
+            return false;
+        }
+        return permanent.destroy(source.getSourceId(), game, false);
+    }
+}

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

@@ -58,6 +58,7 @@ public final class IkoriaLairOfBehemoths extends ExpansionSet {
         cards.add(new SetCardInfo("Migration Path", 164, Rarity.UNCOMMON, mage.cards.m.MigrationPath.class));
         cards.add(new SetCardInfo("Mosscoat Goriak", 167, Rarity.COMMON, mage.cards.m.MosscoatGoriak.class));
         cards.add(new SetCardInfo("Mysterious Egg", 3, Rarity.COMMON, mage.cards.m.MysteriousEgg.class));
+        cards.add(new SetCardInfo("Mythos of Nethroi", 97, Rarity.RARE, mage.cards.m.MythosOfNethroi.class));
         cards.add(new SetCardInfo("Nethroi, Apex of Death", 197, Rarity.MYTHIC, mage.cards.n.NethroiApexOfDeath.class));
         cards.add(new SetCardInfo("Neutralize", 59, Rarity.UNCOMMON, mage.cards.n.Neutralize.class));
         cards.add(new SetCardInfo("Pacifism", 25, Rarity.COMMON, mage.cards.p.Pacifism.class));