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 - £11.90
Lightly Played - £10.10
Moderately Played - £8.40
Heavily Played - £6.00
Damaged - £3.60
Near Mint Non English - £11.90
Lightly Played Non English - £10.10
Moderately Played Non English - £8.40
Heavily Played Non English - £6.00
Damaged Non English - £3.60
Foil Prices
Near Mint Foil - £31.60
Lightly Played Foil - £26.90
Moderately Played Foil - £22.10
Heavily Played Foil - £15.80
Damaged Foil - £9.50
Near Mint Foil Non English - £31.60
Lightly Played Foil Non English - £26.90
Moderately Played Foil Non English - £22.10
Heavily Played Foil Non English - £15.80
Damaged Foil Non English - £9.50