Vilius, Corrupted Corruttor

Cult of {b} (This creature cost {1} less to cast for each {b} in the mana cost of creatures you control).
Flying, Vigilance, Deathtouch, Menace
At the beginning of your end step, mill a card. If
it was a black card, put a +1/+1 counter on Vilius,
Corrupted Corruttor then each opponent loses
1 life and you gain 1 life.
Whenever Vilius, Corrupted Corruttor
attacks, return a black creature card
from the graveyard to your hand.