The King of Death

You begin the game with this card revealed.
You begin the game with 50 life and the
monarch.
Whenever an opponent loses the game, if that player doesn't have an undeath counter, instead that player gets an undeath counter, loses all poison counters, shuffles his or her graveyard into his or her library, and his or her life total becomes 5. That player becomes a knight. (They lose the other role type)