Cathia, Twisted Irritator

Simplify 1(As this creature enters the battlefield, reveal any number of cards in your hand that share a creature type with it. This permanent comes in play with a -1/-1 counter on it for each card revealed this way.)
{t}: Until end of turn, creatures your opponents control get -1/-1 for each -1/-1 counter on Cathia, Twisted Irritator.
Your pain is her joy.