A Darkness In The Light

At the beginning of your end step pay {2} and sacrifice a creature. If you don't, destroy this enchantment.
Whenever an opponent draws a card they
must discard a card, whenever an opponent
gains life they take that much damage,
whenever an opponent casts a creature they
must sacrifice a creature.
I can't lie to you about your chances, but... you have
my sympathies. -Ash