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 - $3.60
Lightly Played - $2.90
Moderately Played - $2.50
Heavily Played - $2.20
Damaged - $1.80
Near Mint Spanish - $3.60
Lightly Played Spanish - $2.90
Moderately Played Spanish - $2.50
Heavily Played Spanish - $2.20
Damaged Spanish - $1.80
Foil Prices
Near Mint Foil - $4.80
Lightly Played Foil - $3.90
Moderately Played Foil - $3.40
Heavily Played Foil - $2.90
Damaged Foil - $2.40
Near Mint Foil Spanish - $4.80
Lightly Played Foil Spanish - $3.90
Moderately Played Foil Spanish - $3.40
Heavily Played Foil Spanish - $2.90
Damaged Foil Spanish - $2.40