Papa Emeritus

Undying
At the beginning of your end step, if you control
no other creatures, you lose the game.
Sacrifice a creature: Put a +1/+1 counter on Papa
Emeritus for each creature an opponent controls.
Creatures your opponents control have -1/-1 and
lose all abilities.
[MESSAGE FROM THE CLERGY] Lose all abilities, except for the ability to rock, of course.