Nyarlathotep, Black Pharaoh

When Nyrlathotep, Black Pharaoh enters the battlefield, get an insanity counter.
{b}{b}{b}{b}: exile target card in your graveyard, Nyarlathotep becomes a copy of that card until the next end step.
...afraid yet eager to see and hear the great, the obscure, the unutterable Nyarlathotep.