Fix Alloy Golem color set duration (#10195)

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

@@ -0,0 +1,44 @@
+package mage.abilities.effects.common.continuous;
+
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.constants.Duration;
+import mage.constants.Layer;
+import mage.constants.Outcome;
+import mage.constants.SubLayer;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+/**
+ * @author xenohedron
+ */
+
+public class SetChosenColorEffect extends ContinuousEffectImpl {
+
+    public SetChosenColorEffect() {
+        super(Duration.WhileOnBattlefield, Layer.ColorChangingEffects_5, SubLayer.NA, Outcome.Neutral);
+        staticText = "{this} is the chosen color.";
+    }
+
+    public SetChosenColorEffect(final SetChosenColorEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public SetChosenColorEffect copy() {
+        return new SetChosenColorEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanent(source.getSourceId());
+        ObjectColor color = (ObjectColor) game.getState().getValue(source.getSourceId() + "_color") ;
+        if (permanent != null && color != null) {
+            permanent.getColor().setColor(color);
+            return true;
+        }
+        return false;
+    }
+
+}

Mage/src/main/java/mage/abilities/effects/common/enterAttribute/EnterAttributeSetChosenColorEffect.java

@@ -0,0 +1,44 @@
+package mage.abilities.effects.common.enterAttribute;
+
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+/**
+ * IMPORTANT: This only sets the chosen color while the source permanent is entering the battlefield.
+ * You should also use @link{mage.abilities.effects.common.continuous.SetChosenColorEffect} so that the color persists.
+ *
+ * @author xenohedron
+ */
+
+public class EnterAttributeSetChosenColorEffect extends OneShotEffect {
+
+
+    public EnterAttributeSetChosenColorEffect() {
+        super(Outcome.Neutral);
+    }
+
+    public EnterAttributeSetChosenColorEffect(final EnterAttributeSetChosenColorEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public EnterAttributeSetChosenColorEffect copy() {
+        return new EnterAttributeSetChosenColorEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanentEntering(source.getSourceId());
+        ObjectColor color = (ObjectColor) game.getState().getValue(source.getSourceId() + "_color") ;
+        if (permanent != null && color != null) {
+            permanent.getColor().setColor(color);
+            return true;
+        }
+        return false;
+    }
+
+}