Satanic Pact

As a cost to launch the Satanic Pact, sacrifice all
your creatures and lose -X lives. Resurrects a legendary creature or creature from a cemetery.
That creature is now a zombie demon with an
+X/+X counter over her with the ability fly and threaten. All your rivals lose 10 lives.
(If you can't eliminate a player in the next 4 turns,
you lose the game).
"My enemies surrounded me and I didn't know what
to do"