Theo Vuliev, Thrullmaster

As long as you control a Thrull, Theo Vuliev, Thrullmaster has protection from creatures.
Whenever you cast a white spell, create an X/X
black Thrull creature token and you lose X life,
where X was the amount of black mana spent to
cast it.
Whenever you cast a black spell, you gain life
equal to the amount of white mana spent to cast
it.