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 - $2.30
Lightly Played - $1.80
Moderately Played - $1.60
Heavily Played - $1.40
Damaged - $1.20
Near Mint Spanish - $2.30
Lightly Played Spanish - $1.80
Moderately Played Spanish - $1.60
Heavily Played Spanish - $1.40
Damaged Spanish - $1.20
Foil Prices
Near Mint Foil - $3.50
Lightly Played Foil - $2.80
Moderately Played Foil - $2.50
Heavily Played Foil - $2.10
Damaged Foil - $1.80
Near Mint Foil Spanish - $3.50
Lightly Played Foil Spanish - $2.80
Moderately Played Foil Spanish - $2.50
Heavily Played Foil Spanish - $2.10
Damaged Foil Spanish - $1.80