Name:Jaws of Defeat
ManaCost:3 B
Types:Enchantment
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Creature.YouCtrl | TriggerZones$ Battlefield | Execute$ TrigLoseLife | TriggerDescription$ Whenever a creature you control enters, target opponent loses life equal to the difference between that creature's power and its toughness.
SVar:TrigLoseLife:DB$ LoseLife | LifeAmount$ X | ValidTgts$ Opponent | TgtPrompt$ Select target opponent
SVar:X:SVar$Y/Abs
SVar:Y:TriggeredCard$CardPower/Minus.Z
SVar:Z:TriggeredCard$CardToughness
Oracle:Whenever a creature you control enters, target opponent loses life equal to the difference between that creature's power and its toughness.
