When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each B in the mana costs of permanents you control counts toward your devotion to black.)
NM-Mint - $2.70
Lightly Played - $2.60
Moderately Played - $2.50
Heavily Played - $2.20
Damaged - $1.80
NM-Mint Non English - $2.70
Lightly Played Non English - $2.60
Moderately Played Non English - $2.50
Heavily Played Non English - $2.20
Damaged Non English - $1.80