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 - $9.300
Lightly Played - $7.400
Moderately Played - $6.500
Heavily Played - $5.600
Damaged - $4.700
Near Mint Spanish - $9.300
Lightly Played Spanish - $7.400
Moderately Played Spanish - $6.500
Heavily Played Spanish - $5.600
Damaged Spanish - $4.700
Foil Prices
Near Mint Foil - $10.900
Lightly Played Foil - $8.700
Moderately Played Foil - $7.600
Heavily Played Foil - $6.600
Damaged Foil - $5.500
Near Mint Foil Spanish - $10.900
Lightly Played Foil Spanish - $8.700
Moderately Played Foil Spanish - $7.600
Heavily Played Foil Spanish - $6.600
Damaged Foil Spanish - $5.500