Emrakul the Revenger

This spell cant be countered.
Flying, Trample, Indestructible, Annihilator 4
Whenever a creature is put into graveyard exile it instead.
You may play cards exiled with Emrakul the
Revenger.
When Emrakul the Revenger is put
into graveyard shuffle it into its owners library
and take an extra turn after this one.