Torment the demon

When Torment the Demon enters the battlefield, each opponents life total becomes 13
You have no maximum Hand size.
{u} Draw cards until you have 13 cards in your hand
Whenever Torment the Demon attacks, deal 13 damage to each blocking creature, and 13 damage divided equally among all players, if the damage is not divided equally, the remaining damage is dealt to Torment the Demon