From 4acdd58eabc2debbe45db9ceb408de8ec08d358e Mon Sep 17 00:00:00 2001
From: xenohedron <12538125+xenohedron@users.noreply.github.com>
Date: Sun, 25 Jan 2026 20:46:10 -0500
Subject: [PATCH] implement [DSK] Creeping Peeper

---
 .../src/mage/cards/c/CreepingPeeper.java      | 113 ++++++++++++++++++
 .../src/mage/sets/DuskmournHouseOfHorror.java |   1 +
 2 files changed, 114 insertions(+)
 create mode 100644 Mage.Sets/src/mage/cards/c/CreepingPeeper.java

diff --git a/Mage.Sets/src/mage/cards/c/CreepingPeeper.java b/Mage.Sets/src/mage/cards/c/CreepingPeeper.java
new file mode 100644
index 00000000000..b548efce421
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/c/CreepingPeeper.java
@@ -0,0 +1,113 @@
+package mage.cards.c;
+
+import mage.ConditionalMana;
+import mage.MageInt;
+import mage.MageObject;
+import mage.Mana;
+import mage.abilities.Ability;
+import mage.abilities.SpellAbility;
+import mage.abilities.common.RoomUnlockAbility;
+import mage.abilities.common.TurnFaceUpAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.mana.ConditionalColoredManaAbility;
+import mage.abilities.mana.builder.ConditionalManaBuilder;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.SubType;
+import mage.game.Game;
+import mage.game.command.Commander;
+import mage.game.permanent.Permanent;
+import mage.game.stack.Spell;
+import mage.game.stack.StackObject;
+
+import java.util.UUID;
+
+/**
+ * @author xenohedron
+ */
+public final class CreepingPeeper extends CardImpl {
+
+    public CreepingPeeper(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{U}");
+        
+        this.subtype.add(SubType.EYE);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(1);
+
+        // {T}: Add {U}. Spend this mana only to cast an enchantment spell, unlock a door, or turn a permanent face up.
+        this.addAbility(new ConditionalColoredManaAbility(Mana.BlueMana(1), new CreepingPeeperManaBuilder()));
+
+    }
+
+    private CreepingPeeper(final CreepingPeeper card) {
+        super(card);
+    }
+
+    @Override
+    public CreepingPeeper copy() {
+        return new CreepingPeeper(this);
+    }
+}
+
+class CreepingPeeperManaBuilder extends ConditionalManaBuilder {
+
+    @Override
+    public ConditionalMana build(Object... options) {
+        return new CreepingPeeperConditionalMana(this.mana);
+    }
+
+    @Override
+    public String getRule() {
+        return "Spend this mana only to cast an enchantment spell, unlock a door, or turn a permanent face up";
+    }
+}
+
+class CreepingPeeperConditionalMana extends ConditionalMana {
+
+    public CreepingPeeperConditionalMana(Mana mana) {
+        super(mana);
+        addCondition(new CreepingPeeperManaCondition());
+    }
+}
+
+class CreepingPeeperManaCondition implements Condition {
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        // cast an enchantment
+        if (source instanceof SpellAbility && !source.isActivated()) {
+            MageObject object = game.getObject(source);
+            if ((object instanceof StackObject)) {
+                return object.isEnchantment(game);
+            }
+            // checking mana without real cast
+            if (game.inCheckPlayableState()) {
+                Spell spell = null;
+                if (object instanceof Card) {
+                    spell = new Spell((Card) object, (SpellAbility) source, source.getControllerId(), game.getState().getZone(source.getSourceId()), game);
+                } else if (object instanceof Commander) {
+                    spell = new Spell(((Commander) object).getSourceObject(), (SpellAbility) source, source.getControllerId(), game.getState().getZone(source.getSourceId()), game);
+                }
+                return spell != null && spell.isEnchantment(game);
+            }
+        }
+        // unlock a door
+        if (source instanceof RoomUnlockAbility) {
+            return true;
+        }
+        // turn a permanent face up
+        if (source instanceof TurnFaceUpAbility) {
+            Permanent permanent = game.getPermanent(source.getSourceId());
+            if (permanent == null) {
+                return false;
+            }
+            return permanent.isManifested()
+                    || permanent.isMorphed()
+                    || permanent.isDisguised()
+                    || permanent.isCloaked();
+        }
+        return false;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/DuskmournHouseOfHorror.java b/Mage.Sets/src/mage/sets/DuskmournHouseOfHorror.java
index a1b88dec348..1c59406f553 100644
--- a/Mage.Sets/src/mage/sets/DuskmournHouseOfHorror.java
+++ b/Mage.Sets/src/mage/sets/DuskmournHouseOfHorror.java
@@ -61,6 +61,7 @@ public final class DuskmournHouseOfHorror extends ExpansionSet {
         cards.add(new SetCardInfo("Conductive Machete", 244, Rarity.UNCOMMON, mage.cards.c.ConductiveMachete.class));
         cards.add(new SetCardInfo("Coordinated Clobbering", 173, Rarity.UNCOMMON, mage.cards.c.CoordinatedClobbering.class));
         cards.add(new SetCardInfo("Cracked Skull", 88, Rarity.COMMON, mage.cards.c.CrackedSkull.class));
+        cards.add(new SetCardInfo("Creeping Peeper", 46, Rarity.COMMON, mage.cards.c.CreepingPeeper.class));
         cards.add(new SetCardInfo("Cryptid Inspector", 174, Rarity.COMMON, mage.cards.c.CryptidInspector.class));
         cards.add(new SetCardInfo("Cult Healer", 2, Rarity.COMMON, mage.cards.c.CultHealer.class));
         cards.add(new SetCardInfo("Cursed Recording", 131, Rarity.RARE, mage.cards.c.CursedRecording.class, NON_FULL_USE_VARIOUS));