Gil'graxoth, Ravenous One

Eminence - You can activate this ability if Gil'graxoth is in your command zone or on the battlefield. Sacrifice a permanent: Each player gains 1 life.
Menace, Ward {2}
Whenever you sacrifice a permanent with mana value 5 or greater, each opponent must sacrifice a permanent that shares a type with it. If any opponent can't, they must either let you draw a card or lose 5 life.