Void Banshee

Flying, Flash
Whenever this creature enters the battlefield, put
a Void counter on target creature an opponent controls, at the beginning of your upkeep, flip 2
coins if both were heads, destroy target creature
with a Void counter on it, if both were tails, take control of target creature with a Void counter on
it, if one was heads and the other was tails, deal 4 damage to an opponent that controls a creature
with a Void counter on it