Signoir the Devourer

Flying, lifelink
When Signoir the Devourer enters the
battlefield, sacrifice any number of creatures.
Signoir the Devourer gets a +1/+1 counter for
each creature sacrificed this way.
Whenever a creature you control dies, each
opponent sacrifices a creature.
Exile seven other cards from your graveyard:
return Signoir the Devourer from your graveyard
to the battlefield.