[TLA] Implement Watery Grasp

Mage.Sets/src/mage/cards/w/WateryGrasp.java

@@ -0,0 +1,87 @@
+package mage.cards.w;
+
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.common.WaterbendCost;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.AttachEffect;
+import mage.abilities.effects.common.DontUntapInControllersUntapStepEnchantedEffect;
+import mage.abilities.keyword.EnchantAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.SubType;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPermanent;
+import mage.target.common.TargetCreaturePermanent;
+
+import java.util.Optional;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class WateryGrasp extends CardImpl {
+
+    public WateryGrasp(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{U}");
+
+        this.subtype.add(SubType.AURA);
+
+        // Enchant creature
+        TargetPermanent auraTarget = new TargetCreaturePermanent();
+        this.getSpellAbility().addTarget(auraTarget);
+        this.getSpellAbility().addEffect(new AttachEffect(Outcome.BoostCreature));
+        this.addAbility(new EnchantAbility(auraTarget));
+
+        // Enchanted creature doesn't untap during its controller's untap step.
+        this.addAbility(new SimpleStaticAbility(new DontUntapInControllersUntapStepEnchantedEffect()));
+
+        // Waterbend {5}: Enchanted creature's owner shuffles it into their library.
+        this.addAbility(new SimpleActivatedAbility(new WateryGraspEffect(), new WaterbendCost(5)));
+    }
+
+    private WateryGrasp(final WateryGrasp card) {
+        super(card);
+    }
+
+    @Override
+    public WateryGrasp copy() {
+        return new WateryGrasp(this);
+    }
+}
+
+class WateryGraspEffect extends OneShotEffect {
+
+    WateryGraspEffect() {
+        super(Outcome.Benefit);
+        staticText = "enchanted creature's owner shuffles it into their library";
+    }
+
+    private WateryGraspEffect(final WateryGraspEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public WateryGraspEffect copy() {
+        return new WateryGraspEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = Optional
+                .ofNullable(source.getSourcePermanentOrLKI(game))
+                .map(Permanent::getAttachedTo)
+                .map(game::getPermanent)
+                .orElse(null);
+        if (permanent == null) {
+            return false;
+        }
+        Player player = game.getPlayer(permanent.getOwnerId());
+        return player != null && player.shuffleCardsToLibrary(permanent, game, source);
+    }
+}

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

@@ -112,6 +112,7 @@ public final class AvatarTheLastAirbender extends ExpansionSet {
         cards.add(new SetCardInfo("Turtle-Duck", 200, Rarity.COMMON, mage.cards.t.TurtleDuck.class));
         cards.add(new SetCardInfo("Vindictive Warden", 249, Rarity.COMMON, mage.cards.v.VindictiveWarden.class));
         cards.add(new SetCardInfo("Waterbending Lesson", 80, Rarity.COMMON, mage.cards.w.WaterbendingLesson.class));
+        cards.add(new SetCardInfo("Watery Grasp", 82, Rarity.COMMON, mage.cards.w.WateryGrasp.class));
         cards.add(new SetCardInfo("Yue, the Moon Spirit", 338, Rarity.RARE, mage.cards.y.YueTheMoonSpirit.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Yue, the Moon Spirit", 83, Rarity.RARE, mage.cards.y.YueTheMoonSpirit.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Yuyan Archers", 161, Rarity.COMMON, mage.cards.y.YuyanArchers.class));