When Spectral Adversary enters the battlefield, you may pay {1}{U} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on Spectral Adversary, then up to that many other target artifacts, creatures, and/or enchantments phase out.
Near Mint - $500
Lightly Played - $400
Moderately Played - $400
Heavily Played - $300
Damaged - $300
Near Mint Spanish - $500
Lightly Played Spanish - $400
Moderately Played Spanish - $400
Heavily Played Spanish - $300
Damaged Spanish - $300
Foil Prices
Near Mint Foil - $500
Lightly Played Foil - $400
Moderately Played Foil - $400
Heavily Played Foil - $300
Damaged Foil - $300
Near Mint Foil Spanish - $500
Lightly Played Foil Spanish - $400
Moderately Played Foil Spanish - $400
Heavily Played Foil Spanish - $300
Damaged Foil Spanish - $300