Araithia, the Unseen

When Araithia enters the battlefield, manifest the top 3 cards of your library. Then turn Araithia face down as a 2/2 creature.
As long as Araithia is turned face down, morphs can't attack, and whenever acreature enters the battlefield under an opponents control, they pay {2} and put +1/+1 counter on that creature, if they don't it enters with a -1/-1 counter.