[CMM] Implement Sliver Gravemother

Mage.Sets/src/mage/cards/s/SliverGravemother.java

@@ -0,0 +1,92 @@
+package mage.cards.s;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.effects.common.ruleModifying.LegendRuleDoesntApplyEffect;
+import mage.abilities.keyword.EncoreAbility;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterCard;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterControlledPermanent;
+import mage.filter.common.FilterCreatureCard;
+import mage.game.Game;
+import mage.players.Player;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class SliverGravemother extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterControlledPermanent(SubType.SLIVER, "Slivers you control");
+
+    public SliverGravemother(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{W}{U}{B}{R}{G}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.SLIVER);
+        this.power = new MageInt(6);
+        this.toughness = new MageInt(6);
+
+        // The "legend rule" doesn't apply to Slivers you control.
+        this.addAbility(new SimpleStaticAbility(new LegendRuleDoesntApplyEffect(filter)));
+
+        // Each Sliver creature card in your graveyard has encore {X}, where X is its mana value.
+        this.addAbility(new SimpleStaticAbility(new SliverGravemotherEffect()));
+
+        // Encore {5}
+        this.addAbility(new EncoreAbility(new ManaCostsImpl<>("{5}")));
+    }
+
+    private SliverGravemother(final SliverGravemother card) {
+        super(card);
+    }
+
+    @Override
+    public SliverGravemother copy() {
+        return new SliverGravemother(this);
+    }
+}
+
+class SliverGravemotherEffect extends ContinuousEffectImpl {
+
+    private static final FilterCard filter = new FilterCreatureCard();
+
+    static {
+        filter.add(SubType.SLIVER.getPredicate());
+    }
+
+    public SliverGravemotherEffect() {
+        super(Duration.WhileOnBattlefield, Layer.AbilityAddingRemovingEffects_6, SubLayer.NA, Outcome.AddAbility);
+        this.staticText = "each Sliver creature card in your graveyard has encore {X}, where X is its mana value";
+    }
+
+    public SliverGravemotherEffect(final SliverGravemotherEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public SliverGravemotherEffect copy() {
+        return new SliverGravemotherEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        for (Card card : player.getGraveyard().getCards(filter, game)) {
+            game.getState().addOtherAbility(card, new EncoreAbility(new GenericManaCost(card.getManaValue())));
+        }
+        return true;
+    }
+}

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

@@ -23,6 +23,7 @@ public final class CommanderMasters extends ExpansionSet {
         cards.add(new SetCardInfo("Jeweled Lotus", 396, Rarity.MYTHIC, mage.cards.j.JeweledLotus.class));
         cards.add(new SetCardInfo("Personal Tutor", 110, Rarity.RARE, mage.cards.p.PersonalTutor.class));
         cards.add(new SetCardInfo("Selvala, Heart of the Wilds", 220, Rarity.MYTHIC, mage.cards.s.SelvalaHeartOfTheWilds.class));
+        cards.add(new SetCardInfo("Sliver Gravemother", 707, Rarity.MYTHIC, mage.cards.s.SliverGravemother.class));
         cards.add(new SetCardInfo("The Ur-Dragon", 361, Rarity.MYTHIC, mage.cards.t.TheUrDragon.class));
     }
 }