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 - $2.30
Lightly Played - $2.10
Moderately Played - $1.90
Heavily Played - $1.60
Damaged - $1.20
NM-Mint Non English - $2.30
Lightly Played Non English - $2.10
Moderately Played Non English - $1.90
Heavily Played Non English - $1.60
Damaged Non English - $1.20