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 - $3.00
Lightly Played - $2.80
Moderately Played - $2.70
Heavily Played - $2.40
Damaged - $1.90
NM-Mint Non English - $3.00
Lightly Played Non English - $2.80
Moderately Played Non English - $2.70
Heavily Played Non English - $2.40
Damaged Non English - $1.90