Name:Essence Leak
ManaCost:U
Types:Enchantment Aura
K:Enchant permanent
A:SP$ Attach | Cost$ U | ValidTgts$ Permanent | TgtPrompt$ Select target permanent | AITgts$ Card.cmcGE1+Green,Card.cmcGE1+Red | AILogic$ Curse
S:Mode$ Continuous | Affected$ Permanent.AttachedBy+Red,Permanent.AttachedBy+Green | AddTrigger$ TrigEssencePhase | AddSVar$ TrigEssenceLeak | Description$ 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."
SVar:TrigEssencePhase:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | Execute$ TrigEssenceLeak | TriggerZones$ Battlefield | TriggerDescription$ At the beginning of your upkeep, sacrifice this permanent unless you pay its mana cost.
SVar:TrigEssenceLeak:DB$ Sacrifice | Defined$ Self | UnlessCost$ CardManaCost | UnlessPayer$ You
SVar:RemRandomDeck:True
SVar:NonStackingAttachEffect:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/essence_leak.jpg
Oracle:Enchant permanent\nAs 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."