K’rrik, Son of Yawgmoth [Modern Horizons 3]

((B/P) can be paid with either B or 2 life.)
Lifelink
For each B in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik, Son of Yawgmoth.