When Tainted Adversary enters the battlefield, you may pay {2}{B} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on Tainted Adversary, then create twice that many 2/2 black Zombie creature tokens with decayed. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)
Near Mint - $0.95
Lightly Played - $0.90
Moderately Played - $0.71
Heavily Played - $0.57
Damaged - $0.38
Near Mint Non-English - $0.95
Lightly Played Non-English - $0.90
Moderately Played Non-English - $0.71
Heavily Played Non-English - $0.57
Damaged Non-English - $0.38
Foil Prices
Near Mint Foil - $1.75
Lightly Played Foil - $1.50
Moderately Played Foil - $1.25
Heavily Played Foil - $1.00
Damaged Foil - $0.75
Near Mint Foil Non-English - $1.75
Lightly Played Foil Non-English - $1.50
Moderately Played Foil Non-English - $1.25
Heavily Played Foil Non-English - $1.00
Damaged Foil Non-English - $0.75