[WOE] Implement Eriette of the Charmed Apple (#10904)

* WIP

* implemented can't attack effect

* moved logic for "permanents enchanted by Auras" to predicate

* added value hint for ability

* fixed static properties

* changed predicate logic

* fixed issues as per PR comments

* updated predicate name, changed count from static variable

* made DynamicValue static

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

@@ -0,0 +1,65 @@
+package mage.cards.e;
+
+import java.util.UUID;
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfEndStepTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.dynamicvalue.common.PermanentsOnBattlefieldCount;
+import mage.abilities.effects.common.GainLifeEffect;
+import mage.abilities.effects.common.LoseLifeOpponentsEffect;
+import mage.abilities.effects.common.combat.CantAttackYouAllEffect;
+import mage.abilities.hint.ValueHint;
+import mage.constants.SubType;
+import mage.constants.SuperType;
+import mage.constants.TargetController;
+import mage.filter.common.FilterControlledPermanent;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.filter.predicate.permanent.EnchantedBySourceControllerPredicate;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+
+/**
+ *
+ * @author Xanderhall
+ */
+public final class ErietteOfTheCharmedApple extends CardImpl {
+
+    private static final FilterCreaturePermanent filter = new FilterCreaturePermanent("creatures enchanted by an Aura you control");
+    private static final DynamicValue count = new PermanentsOnBattlefieldCount(new FilterControlledPermanent(SubType.AURA));
+
+    static {
+        filter.add(EnchantedBySourceControllerPredicate.instance);   
+    }
+
+    public ErietteOfTheCharmedApple(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{W}{B}");
+        
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.HUMAN);
+        this.subtype.add(SubType.WARLOCK);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(4);
+
+        // Each creature that's enchanted by an Aura you control can't attack you or planeswalkers you control.
+        this.addAbility(new SimpleStaticAbility(new CantAttackYouAllEffect(Duration.WhileOnBattlefield, filter, true)));
+
+        // At the beginning of your end step, each opponent loses X life and you gain X life, where X is the number of Auras you control.
+        Ability ability = new BeginningOfEndStepTriggeredAbility(new LoseLifeOpponentsEffect(count), TargetController.YOU, false);
+        ability.addEffect(new GainLifeEffect(count));
+        ability.addHint(new ValueHint("Number of Auras you control", count));
+        this.addAbility(ability);
+    }
+
+    private ErietteOfTheCharmedApple(final ErietteOfTheCharmedApple card) {
+        super(card);
+    }
+
+    @Override
+    public ErietteOfTheCharmedApple copy() {
+        return new ErietteOfTheCharmedApple(this);
+    }
+}

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

@@ -53,6 +53,7 @@ public final class WildsOfEldraine extends ExpansionSet {
         cards.add(new SetCardInfo("Edgewall Inn", 255, Rarity.UNCOMMON, mage.cards.e.EdgewallInn.class));
         cards.add(new SetCardInfo("Elvish Archivist", 168, Rarity.RARE, mage.cards.e.ElvishArchivist.class));
         cards.add(new SetCardInfo("Embereth Veteran", 127, Rarity.UNCOMMON, mage.cards.e.EmberethVeteran.class));
+        cards.add(new SetCardInfo("Eriette of the Charmed Apple", 202, Rarity.MYTHIC, mage.cards.e.ErietteOfTheCharmedApple.class));
         cards.add(new SetCardInfo("Evolving Wilds", 256, Rarity.COMMON, mage.cards.e.EvolvingWilds.class));
         cards.add(new SetCardInfo("Expel the Interlopers", 13, Rarity.RARE, mage.cards.e.ExpelTheInterlopers.class));
         cards.add(new SetCardInfo("Faerie Dreamthief", 89, Rarity.UNCOMMON, mage.cards.f.FaerieDreamthief.class));

Mage/src/main/java/mage/filter/predicate/permanent/EnchantedBySourceControllerPredicate.java

@@ -0,0 +1,30 @@
+package mage.filter.predicate.permanent;
+
+import mage.constants.SubType;
+import mage.filter.predicate.ObjectSourcePlayer;
+import mage.filter.predicate.ObjectSourcePlayerPredicate;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+import java.util.Objects;
+
+/**
+ * @author Xanderhall
+ */
+public enum EnchantedBySourceControllerPredicate implements ObjectSourcePlayerPredicate<Permanent> {
+instance;
+
+    @Override
+    public boolean apply(ObjectSourcePlayer<Permanent> input, Game game) {
+        return input.getObject().getAttachments()
+                .stream()
+                .map(game::getPermanent)
+                .filter(Objects::nonNull)
+                .anyMatch(p -> p.hasSubtype(SubType.AURA, game) && p.isControlledBy(input.getPlayerId()));
+    }
+
+    @Override
+    public String toString() {
+        return "Enchanted by source";
+    }
+}