[DSK] Implement Unable to Scream (#13234)

* Introduced LoseAllAbilitiesAttachedEffect

* Added unit tests for Unable to Scream

Mage.Sets/src/mage/cards/u/UnableToScream.java

@@ -0,0 +1,95 @@
+package mage.cards.u;
+
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.effects.ContinuousRuleModifyingEffectImpl;
+import mage.abilities.effects.common.AttachEffect;
+import mage.abilities.effects.common.continuous.AddCardSubtypeAttachedEffect;
+import mage.abilities.effects.common.continuous.AddCardTypeAttachedEffect;
+import mage.abilities.effects.common.continuous.LoseAllAbilitiesAttachedEffect;
+import mage.abilities.effects.common.continuous.SetBasePowerToughnessEnchantedEffect;
+import mage.abilities.keyword.EnchantAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.target.TargetPermanent;
+import mage.target.common.TargetCreaturePermanent;
+
+import java.util.UUID;
+
+/**
+ * @author markort147
+ */
+public final class UnableToScream extends CardImpl {
+
+    public UnableToScream(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.Detriment));
+        this.addAbility(new EnchantAbility(auraTarget));
+
+        // Enchanted creature loses all abilities and is a Toy artifact creature with base power and toughness 0/2 in addition to its other types.
+        Ability ability = new SimpleStaticAbility(new LoseAllAbilitiesAttachedEffect(AttachmentType.AURA));
+        ability.addEffect(new AddCardSubtypeAttachedEffect(SubType.TOY, AttachmentType.AURA).setText(" and is a Toy"));
+        ability.addEffect(new AddCardTypeAttachedEffect(CardType.ARTIFACT, AttachmentType.AURA).setText(" artifact creature"));
+        ability.addEffect(new SetBasePowerToughnessEnchantedEffect(0, 2).setText(" with base power and toughness 0/2 in addition to its other types."));
+        this.addAbility(ability);
+
+        // As long as enchanted creature is face down, it can't be turned face up.
+        this.addAbility(new SimpleStaticAbility(new UnableToScreamPreventingEffect()));
+    }
+
+    private UnableToScream(final UnableToScream card) {
+        super(card);
+    }
+
+    @Override
+    public UnableToScream copy() {
+        return new UnableToScream(this);
+    }
+}
+
+class UnableToScreamPreventingEffect extends ContinuousRuleModifyingEffectImpl {
+
+    UnableToScreamPreventingEffect() {
+        super(Duration.WhileOnBattlefield, Outcome.Detriment);
+        setText("As long as enchanted creature is face down, it can't be turned face up.");
+    }
+
+    private UnableToScreamPreventingEffect(final UnableToScreamPreventingEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType().equals(GameEvent.EventType.TURN_FACE_UP);
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        Permanent aura = game.getPermanent(source.getSourceId());
+        if (aura == null) {
+            return false;
+        }
+
+        Permanent creature = game.getPermanent(aura.getAttachedTo());
+        if (creature == null) {
+            return false;
+        }
+
+        return creature.isFaceDown(game) && event.getTargetId().equals(creature.getId());
+    }
+
+    @Override
+    public UnableToScreamPreventingEffect copy() {
+        return new UnableToScreamPreventingEffect(this);
+    }
+}

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

@@ -241,6 +241,7 @@ private DuskmournHouseOfHorror() {
         cards.add(new SetCardInfo("Twist Reality", 77, Rarity.COMMON, mage.cards.t.TwistReality.class));
         cards.add(new SetCardInfo("Twitching Doll", 201, Rarity.RARE, mage.cards.t.TwitchingDoll.class));
         cards.add(new SetCardInfo("Tyvar, the Pummeler", 202, Rarity.MYTHIC, mage.cards.t.TyvarThePummeler.class));
+        cards.add(new SetCardInfo("Unable to Scream", 78, Rarity.COMMON, mage.cards.u.UnableToScream.class));
         cards.add(new SetCardInfo("Under the Skin", 203, Rarity.UNCOMMON, mage.cards.u.UnderTheSkin.class));
         cards.add(new SetCardInfo("Unidentified Hovership", 37, Rarity.RARE, mage.cards.u.UnidentifiedHovership.class));
         cards.add(new SetCardInfo("Unnerving Grasp", 80, Rarity.UNCOMMON, mage.cards.u.UnnervingGrasp.class));

Mage.Tests/src/test/java/org/mage/test/cards/single/dsk/UnableToScreamTest.java

@@ -0,0 +1,154 @@
+package org.mage.test.cards.single.dsk;
+
+import mage.abilities.Ability;
+import mage.abilities.mana.GreenManaAbility;
+import mage.cards.Card;
+import mage.constants.*;
+import org.junit.Assert;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.stream.Collectors;
+
+/**
+ * @author markort147
+ */
+public class UnableToScreamTest extends CardTestPlayerBase {
+
+    /*
+     * Unable to Scream {U}
+     * Enchantment - Aura
+     * Enchant creature
+     * Enchanted creature loses all abilities and is a Toy artifact creature with base power and toughness 0/2 in addition to its other types.
+     * As long as enchanted creature is face down, it can't be turned face up.
+     */
+    public static final String UNABLE_TO_SCREAM = "Unable to Scream";
+
+    /*
+     * Appetite for the Unnatural {2}{G}
+     * Instant
+     * Destroy target artifact or enchantment. You gain 2 life.
+     */
+    public static final String APPETITE_FOR_THE_UNNATURAL = "Appetite for the Unnatural";
+
+
+    // Cast a spell that would turn the creature face up, but Unable to Scream negates the effect.
+    // After removing Unable to Scream, cast the spell again and the effect applies correctly.
+    @Test
+    public void preventFromTurningFaceUpTest() {
+        /*
+         * Akroma, Angel of Fury {5}{R}{R}{R}
+         * Creature - Legendary Angel
+         * 6/6
+         * Akroma, Angel of Fury can't be countered.
+         * Flying
+         * Trample
+         * Protection from white and from blue.
+         * {R}: Akroma, Angel of Fury gets +1/+0 until end of turn.
+         * Morph {3}{R}{R}{R}
+         */
+        final String akromaAngelOfFury = "Akroma, Angel of Fury";
+
+        /*
+         * Break Open {1}{R}
+         * Instant
+         * Turn target face-down creature an opponent controls face up.
+         */
+        final String breakOpen = "Break Open";
+
+        setStrictChooseMode(true);
+
+        addCard(Zone.HAND, playerB, akromaAngelOfFury);
+        addCard(Zone.HAND, playerB, APPETITE_FOR_THE_UNNATURAL);
+        addCard(Zone.BATTLEFIELD, playerB, "Mountain", 6);
+        addCard(Zone.BATTLEFIELD, playerB, "Forest", 3);
+
+        addCard(Zone.HAND, playerA, UNABLE_TO_SCREAM);
+        addCard(Zone.HAND, playerA, breakOpen, 2);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 2);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 1);
+
+        // prepare the face down creature
+        castSpell(2, PhaseStep.PRECOMBAT_MAIN, playerB, akromaAngelOfFury + " using Morph");
+        // attach Unable to Scream to it
+        castSpell(3, PhaseStep.PRECOMBAT_MAIN, playerA, UNABLE_TO_SCREAM, EmptyNames.FACE_DOWN_CREATURE.getTestCommand(), true);
+        // cast a spell that would turn the creature face up
+        castSpell(3, PhaseStep.PRECOMBAT_MAIN, playerA, breakOpen, EmptyNames.FACE_DOWN_CREATURE.getTestCommand());
+
+        // the creature is still face down
+        checkPermanentCount("Face down creature is on the battlefield", 3, PhaseStep.BEGIN_COMBAT, playerB, EmptyNames.FACE_DOWN_CREATURE.getTestCommand(), 1);
+        checkPermanentCount("Akroma is not on the battlefield", 3, PhaseStep.BEGIN_COMBAT, playerB, akromaAngelOfFury, 0);
+
+        // destroy Unable to Scream
+        castSpell(4, PhaseStep.PRECOMBAT_MAIN, playerB, APPETITE_FOR_THE_UNNATURAL, UNABLE_TO_SCREAM);
+        // cast a spell that would turn the creature face up
+        castSpell(5, PhaseStep.PRECOMBAT_MAIN, playerA, breakOpen, EmptyNames.FACE_DOWN_CREATURE.getTestCommand());
+
+        // now the creature is turned face up
+        checkPermanentCount("Face down creature is not on the battlefield", 5, PhaseStep.BEGIN_COMBAT, playerB, EmptyNames.FACE_DOWN_CREATURE.getTestCommand(), 0);
+        checkPermanentCount("Akroma is on the battlefield", 5, PhaseStep.BEGIN_COMBAT, playerB, akromaAngelOfFury, 1);
+
+        setStopAt(5, PhaseStep.BEGIN_COMBAT);
+        execute();
+    }
+
+    // Unable to Scream changes type, subtype and base stats of a creature.
+    // After removing Unable to Scream, the creature restores its type, subtype, and base stats.
+    @Test
+    public void becomesEffectTest() {
+        /*
+         * Llanowar Elves {G}
+         * Creature - Elf Druid
+         * 1/1
+         * {T}: Add {G}.
+         */
+        final String llanowarElves = "Llanowar Elves";
+
+        setStrictChooseMode(true);
+
+        addCard(Zone.HAND, playerB, APPETITE_FOR_THE_UNNATURAL);
+        addCard(Zone.BATTLEFIELD, playerB, llanowarElves);
+        addCard(Zone.BATTLEFIELD, playerB, "Forest", 3);
+
+        addCard(Zone.HAND, playerA, UNABLE_TO_SCREAM);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 2);
+
+        // attach Unable to Scream to the creature
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, UNABLE_TO_SCREAM, llanowarElves);
+
+        // the creature is an artifact creature, toy elf druid with base stats 0/2
+        runCode("The creature is an artifact creature, toy elf druid with base stats 0/2", 1, PhaseStep.BEGIN_COMBAT, playerB,
+                (info, player, game) -> {
+                    Card elves = game.getBattlefield().getAllActivePermanents().stream().filter(p -> p.getName().equals(llanowarElves)).findAny().orElse(null);
+                    Assert.assertNotNull("The creature must be on the battlefield", elves);
+                    Assert.assertEquals("The creature must have base power 0", 0, elves.getPower().getValue());
+                    Assert.assertEquals("The creature must have base toughness 2", 2, elves.getToughness().getValue());
+                    Assert.assertTrue("The creature must have lost its abilities", elves.getAbilities(game).isEmpty());
+                    Assert.assertEquals("The creature must be an artifact creature", new HashSet<>(Arrays.asList(CardType.ARTIFACT, CardType.CREATURE)), new HashSet<>(elves.getCardType(game)));
+                    Assert.assertEquals("The creature must be a Toy Elf Druid", new HashSet<>(Arrays.asList(SubType.TOY, SubType.ELF, SubType.DRUID)), new HashSet<>(elves.getSubtype(game)));
+                }
+        );
+
+        // destroy Unable to Scream
+        castSpell(2, PhaseStep.PRECOMBAT_MAIN, playerB, APPETITE_FOR_THE_UNNATURAL, UNABLE_TO_SCREAM);
+
+        // the creature is a creature, elf druid with base stats 1/1
+        runCode("The creature is creature, toy elf druid with base stats 1/1", 2, PhaseStep.BEGIN_COMBAT, playerB,
+                (info, player, game) -> {
+                    Card elves = game.getBattlefield().getAllActivePermanents().stream().filter(p -> p.getName().equals(llanowarElves)).findAny().orElse(null);
+                    Assert.assertNotNull("The creature must be on the battlefield", elves);
+                    Assert.assertEquals("The creature must have base power 1", 1, elves.getPower().getValue());
+                    Assert.assertEquals("The creature must have base toughness 1", 1, elves.getToughness().getValue());
+                    Assert.assertTrue("The creature must have restored its abilities", elves.getAbilities(game).stream().map(Ability::getClass).collect(Collectors.toList()).contains(GreenManaAbility.class));
+                    Assert.assertEquals("The creature must be just a creature", Collections.singleton(CardType.CREATURE), new HashSet<>(elves.getCardType(game)));
+                    Assert.assertEquals("The creature must be an Elf Druid", new HashSet<>(Arrays.asList(SubType.ELF, SubType.DRUID)), new HashSet<>(elves.getSubtype(game)));
+                }
+        );
+
+        setStopAt(2, PhaseStep.BEGIN_COMBAT);
+        execute();
+    }
+}

Mage/src/main/java/mage/abilities/effects/common/continuous/LoseAllAbilitiesAttachedEffect.java

@@ -0,0 +1,51 @@
+
+
+package mage.abilities.effects.common.continuous;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.constants.*;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+/**
+ * @author markort147
+ */
+public class LoseAllAbilitiesAttachedEffect extends ContinuousEffectImpl {
+
+    protected AttachmentType attachmentType;
+
+    public LoseAllAbilitiesAttachedEffect(AttachmentType attachmentType) {
+        super(Duration.WhileOnBattlefield, Layer.AbilityAddingRemovingEffects_6, SubLayer.NA, Outcome.LoseAbility);
+        this.attachmentType = attachmentType;
+        setText();
+    }
+
+    protected LoseAllAbilitiesAttachedEffect(final LoseAllAbilitiesAttachedEffect effect) {
+        super(effect);
+        this.attachmentType = effect.attachmentType;
+    }
+
+    @Override
+    public LoseAllAbilitiesAttachedEffect copy() {
+        return new LoseAllAbilitiesAttachedEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent equipment = game.getPermanent(source.getSourceId());
+        if (equipment != null && equipment.getAttachedTo() != null) {
+            Permanent creature = game.getPermanent(equipment.getAttachedTo());
+            if (creature != null) {
+                creature.removeAllAbilities(source.getSourceId(), game);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private void setText() {
+        staticText = attachmentType.verb() + " creature loses all abilities";
+    }
+
+}