Nyarlathotep

Whenever Nyarlathotep enters the battlefield or
attacks, you may search your library for a
creature card, reveal it, and put it into your
graveyard. Then shuffle your library.
{u}: Nyarlathotep becomes a copy of target
creature in your graveyard until end of turn.
{b}: Create a token copy of target creature in
your graveyard. Sacrifice it at the beginning
of the next end step.