[WOE] Implement Faerie Slumber Party (#10949)

Mage.Sets/src/mage/cards/f/FaerieSlumberParty.java

@@ -0,0 +1,88 @@
+package mage.cards.f;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.effects.common.ReturnToHandFromBattlefieldAllEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.game.permanent.token.FaerieBlockFliersToken;
+import mage.game.permanent.token.Token;
+
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ *
+ * @author Susucr
+ */
+public final class FaerieSlumberParty extends CardImpl {
+
+    public FaerieSlumberParty(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{4}{U}{U}");
+
+        // Return all creatures to their owners' hands. For each opponent who controlled a creature returned this way, you create two 1/1 blue Faerie creature tokens with flying and "This creature can block only creatures with flying."
+        this.getSpellAbility().addEffect(new FaerieSlumberPartyEffect());
+    }
+
+    private FaerieSlumberParty(final FaerieSlumberParty card) {
+        super(card);
+    }
+
+    @Override
+    public FaerieSlumberParty copy() {
+        return new FaerieSlumberParty(this);
+    }
+}
+
+class FaerieSlumberPartyEffect extends OneShotEffect {
+
+    FaerieSlumberPartyEffect() {
+        super(Outcome.Benefit);
+        this.staticText = "Return all creatures to their owners' hands. For each opponent who controlled a creature "
+                + "returned this way, you create two 1/1 blue Faerie creature tokens with flying and "
+                + "\"This creature can block only creatures with flying.\"";
+    }
+
+    private FaerieSlumberPartyEffect(final FaerieSlumberPartyEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public FaerieSlumberPartyEffect copy() {
+        return new FaerieSlumberPartyEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Set<UUID> opponents = game.getOpponents(source.getControllerId());
+        int count = game.getBattlefield()
+                .getActivePermanents(StaticFilters.FILTER_PERMANENT_CREATURE, source.getControllerId(), game)
+                .stream()
+                .filter(Objects::nonNull)
+                .map(Permanent::getControllerId)
+                .distinct()
+                .filter(opponents::contains)
+                .mapToInt(id -> 1)
+                .sum();
+
+        if(!new ReturnToHandFromBattlefieldAllEffect(StaticFilters.FILTER_PERMANENT_CREATURE)
+                .apply(game, source)) {
+            return false;
+        }
+
+        if(count > 0) {
+            Token token = new FaerieBlockFliersToken();
+            token.putOntoBattlefield(2 * count, game, source, source.getControllerId());
+        }
+
+        return true;
+    }
+
+}

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

@@ -90,6 +90,7 @@ public final class WildsOfEldraine extends ExpansionSet {
         cards.add(new SetCardInfo("Extraordinary Journey", 48, Rarity.RARE, mage.cards.e.ExtraordinaryJourney.class));
         cards.add(new SetCardInfo("Faerie Dreamthief", 89, Rarity.UNCOMMON, mage.cards.f.FaerieDreamthief.class));
         cards.add(new SetCardInfo("Faerie Fencing", 90, Rarity.UNCOMMON, mage.cards.f.FaerieFencing.class));
+        cards.add(new SetCardInfo("Faerie Slumber Party", 371, Rarity.RARE, mage.cards.f.FaerieSlumberParty.class));
         cards.add(new SetCardInfo("Farsight Ritual", 49, Rarity.RARE, mage.cards.f.FarsightRitual.class));
         cards.add(new SetCardInfo("Faunsbane Troll", 203, Rarity.RARE, mage.cards.f.FaunsbaneTroll.class));
         cards.add(new SetCardInfo("Feed the Cauldron", 91, Rarity.COMMON, mage.cards.f.FeedTheCauldron.class));