Lich
{B}{B}{B}{B}
Enchantment
As ~this~ enters, you lose life equal to your life total.
You don't lose the game for having 0 or less life.
If you would gain life, draw that many cards instead.
Whenever you're dealt damage, sacrifice that many nontoken permanents. If you can't, you lose the game.
When ~this~ is put into a graveyard from the battlefield, you lose the game.
Nefarious Lich
{B}{B}{B}{B}
Enchantment
If damage would be dealt to you, exile that many cards from your graveyard instead. If you can't, you lose the game.
If you would gain life, draw that many cards instead.
When ~this~ leaves the battlefield, you lose the game.