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 - $3.70
Lightly Played - $3.00
Moderately Played - $2.60
Heavily Played - $2.30
Damaged - $1.90
Near Mint Spanish - $3.70
Lightly Played Spanish - $3.00
Moderately Played Spanish - $2.60
Heavily Played Spanish - $2.30
Damaged Spanish - $1.90
Foil Prices
Near Mint Foil - $12.90
Lightly Played Foil - $10.30
Moderately Played Foil - $9.00
Heavily Played Foil - $7.70
Damaged Foil - $6.50
Near Mint Foil Spanish - $12.90
Lightly Played Foil Spanish - $10.30
Moderately Played Foil Spanish - $9.00
Heavily Played Foil Spanish - $7.70
Damaged Foil Spanish - $6.50