Ashiok's Home Invader

Menace
Sacrifice a creature: Ashiok's Home Invader
Gains Invulnerability until the end of the turn.
Whenever Ashiok's Home Invader deals damage
to an opponent, look at the top three cards of
their library. Put two in their graveyard and
Exile one.
Any spell or effect you control that interacts
with exiled cards may act as if it exiled them.
"Such a big, pretty bird."