Nyah-Blegh, the Blind God

When Nyah-Blegh enters the battlefield, reveal cards from the top of your library until you have revealed three demons. Demon cards revealed this way are placed on the battlefield tapped with six stun counters on them, all other cards revealed this way are separated into two random piles. Target opponent chooses a pile, that pile is shuffled back into your deck and the other pile is exiled.