Blacker Market

This card counts as black.
As a sorcery you may discard a black card
from your hand to cast this.
Enters play with a charge counter.
At the start of your main phase you may
discard a black card from your hand, if you
do put a charge counter on Blacker Market.
At the beginning of your upkeep gain {b}
for each charge counter on Blacker Market
and lose life equal to the number of charges
counter rounded up.