Demon Tormentor

Quest: If there are no Kings or Goblins left in the
game, you win even if you are dead.
{x}{x}: Reveal your role card, repeat the following
process X times. Each opponent loses 3 life unless
that player sacrifices a nonland permanent or
discards a card. At the beginning of your next
upkeep you die. Activate this ability only once
each turn. This is an ability.