When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls. {4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)
Near Mint - $9.900
Lightly Played - $7.900
Moderately Played - $6.900
Heavily Played - $6.000
Damaged - $5.000
Near Mint Spanish - $9.900
Lightly Played Spanish - $7.900
Moderately Played Spanish - $6.900
Heavily Played Spanish - $6.000
Damaged Spanish - $5.000
Foil Prices
Near Mint Foil - $34.700
Lightly Played Foil - $27.700
Moderately Played Foil - $24.300
Heavily Played Foil - $20.800
Damaged Foil - $17.400
Near Mint Foil Spanish - $34.700
Lightly Played Foil Spanish - $27.700
Moderately Played Foil Spanish - $24.300
Heavily Played Foil Spanish - $20.800
Damaged Foil Spanish - $17.400