Name:Feed the Swarm
ManaCost:1 B
Types:Sorcery
A:SP$ Destroy | Cost$ 1 B | ValidTgts$ Creature.OppCtrl,Enchantment.OppCtrl | TgtPrompt$ Select target creature or enchantment an opponent controls | SubAbility$ DBLoseLife | SpellDescription$ Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.
SVar:DBLoseLife:DB$ LoseLife | Defined$ You | LifeAmount$ X
SVar:X:Targeted$CardManaCost
Oracle:Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.