Instant Karma

Play this whenever a creature you control is destroyed. Destroy the last creature to deal damage to the destroyed creature. If it was a planeswalker, creature, or artifact ability that destroyed the creature, than the card that ability originated from is destroyed. If the creature was destroyed by a sorcery, instant, or other direct player interference, that player takes 5 damage. If the card that destroyed it is currently off the battlefield, the player that card was played by takes 5 damage.