Archfiend of Despair
{6}{B}{B}
Creature -- Demon
6/6
Flying
Your opponents can't gain life.
At the beginning of each end step, each opponent loses life equal to the life that player lost this turn. (Damage causes loss of life.)
Erebos, God of the Dead
{3}{B}
Legendary Enchantment Creature -- God
5/7
Indestructible
As long as your devotion to black is less than five, ~this~ isn't a creature. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)
Your opponents can't gain life.
{1}{B}, Pay 2 life: Draw a card.
Tibalt, Rakish Instigator
{2}{R}
Legendary Planeswalker -- Tibalt
5
Your opponents can't gain life.
[-2]: Create a 1/1 red Devil creature token with "When ~this~ dies, it deals 1 damage to any target."