Yin, Forger of Peace

{4}{w/b} Put a 1/1 wolf creature token onto the battlefield with "When this creature dies, controller loses life equal to the number of cards in opponents graveyard, and vice versa."
Yin, Forger of Peace's Power and Toughness are equal to the amount of life all players have divided by the amount of players.
When chaos has been unleashed, the only hope is peace.