Add Essence Leak

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

@@ -0,0 +1,100 @@
+package mage.cards.e;
+
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfUpkeepTriggeredAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.condition.OrCondition;
+import mage.abilities.condition.common.EnchantedCreatureColorCondition;
+import mage.abilities.costs.Cost;
+import mage.abilities.decorator.ConditionalContinuousEffect;
+import mage.abilities.effects.ContinuousEffect;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.AttachEffect;
+import mage.abilities.effects.common.continuous.GainAbilityAttachedEffect;
+import mage.abilities.keyword.EnchantAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPermanent;
+import mage.util.CardUtil;
+
+import java.util.UUID;
+
+/**
+ *
+ * @author noahg
+ */
+public final class EssenceLeak extends CardImpl {
+
+    public EssenceLeak(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{U}");
+
+        this.subtype.add(SubType.AURA);
+
+        // Enchant permanent
+        TargetPermanent auraTarget = new TargetPermanent();
+        this.getSpellAbility().addTarget(auraTarget);
+        this.getSpellAbility().addEffect(new AttachEffect(Outcome.UnboostCreature));
+        Ability ability = new EnchantAbility(auraTarget.getTargetName());
+        this.addAbility(ability);
+
+        // As long as enchanted permanent is red or green, it has "At the beginning of your upkeep, sacrifice this permanent unless you pay its mana cost."
+        Ability sacAbility =new BeginningOfUpkeepTriggeredAbility(new EssenceLeakEffect(), TargetController.YOU, false);
+        ContinuousEffect isRedOrGreenAbility = new GainAbilityAttachedEffect(sacAbility, AttachmentType.AURA);
+        SimpleStaticAbility ifRedOrGreenAbility = new SimpleStaticAbility(Zone.BATTLEFIELD, new ConditionalContinuousEffect(isRedOrGreenAbility,
+                new OrCondition(new EnchantedCreatureColorCondition(ObjectColor.RED), new EnchantedCreatureColorCondition(ObjectColor.GREEN)),
+                "As long as enchanted permanent is red or green, it has \"At the beginning of your upkeep, sacrifice this permanent unless you pay its mana cost.\""));
+        this.addAbility(ifRedOrGreenAbility);
+    }
+
+    public EssenceLeak(final EssenceLeak card) {
+        super(card);
+    }
+
+    @Override
+    public EssenceLeak copy() {
+        return new EssenceLeak(this);
+    }
+}
+
+class EssenceLeakEffect extends OneShotEffect {
+
+    public EssenceLeakEffect() {
+        super(Outcome.Sacrifice);
+        staticText =  "sacrifice this permanent unless you pay its mana cost";
+    }
+
+    public EssenceLeakEffect(final EssenceLeakEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        Permanent permanent = game.getPermanentOrLKIBattlefield(source.getSourceId());
+        if (player != null && permanent != null) {
+
+            String message = CardUtil.replaceSourceName("Pay {this}'s mana cost?", permanent.getLogName());
+            Cost cost = permanent.getManaCost().copy();
+            if (player.chooseUse(Outcome.Benefit, message, source, game)) {
+                cost.clearPaid();
+                if (cost.pay(source, game, source.getSourceId(), source.getControllerId(), false, null)) {
+                    return true;
+                }
+            }
+            permanent.sacrifice(source.getSourceId(), game);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public EssenceLeakEffect copy() {
+        return new EssenceLeakEffect(this);
+    }
+
+}

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

@@ -106,6 +106,7 @@ public final class Invasion extends ExpansionSet {
         cards.add(new SetCardInfo("Elfhame Sanctuary", 185, Rarity.UNCOMMON, mage.cards.e.ElfhameSanctuary.class));
         cards.add(new SetCardInfo("Elvish Champion", 186, Rarity.RARE, mage.cards.e.ElvishChampion.class));
         cards.add(new SetCardInfo("Empress Galina", 54, Rarity.RARE, mage.cards.e.EmpressGalina.class));
+        cards.add(new SetCardInfo("Essence Leak", 55, Rarity.UNCOMMON, mage.cards.e.EssenceLeak.class));
         cards.add(new SetCardInfo("Exclude", 56, Rarity.COMMON, mage.cards.e.Exclude.class));
         cards.add(new SetCardInfo("Exotic Curse", 105, Rarity.COMMON, mage.cards.e.ExoticCurse.class));
         cards.add(new SetCardInfo("Explosive Growth", 187, Rarity.COMMON, mage.cards.e.ExplosiveGrowth.class));