Zon Kuthon

Whenever Zon Kuthon blocks or is blocked by a creature, tap that creature. It doesn't untap
during it's controller's next untap step.
Whenever a creature an opponent controls deals
damage to Zon Kuthon, that creature's controller
must either lose that much life, or discard their
hand.
At the beginning of your end step, you lose 5 life.