Fart

Trojan {4}{g}{g} (If you cast this card for its trojan cost, it's an Aura spell with enchant creature an opponent controls. It becomes a creature again if it's
not attached to a creature.)
At the beginning of each opponent's upkeep, enchanted creature deals damage equal to its power to a random creature you don't control.
{2}{g}{g}: Attach Fart to target creature.