Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls. Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.
Near Mint - £1.10
Lightly Played - £1.00
Moderately Played - £0.80
Heavily Played - £0.60
Damaged - £0.40
Near Mint Non English - £1.10
Lightly Played Non English - £1.00
Moderately Played Non English - £0.80
Heavily Played Non English - £0.60
Damaged Non English - £0.40
Foil Prices
Near Mint Foil - £27.60
Lightly Played Foil - £23.50
Moderately Played Foil - £19.30
Heavily Played Foil - £13.80
Damaged Foil - £8.30
Near Mint Foil Non English - £27.60
Lightly Played Foil Non English - £23.50
Moderately Played Foil Non English - £19.30
Heavily Played Foil Non English - £13.80
Damaged Foil Non English - £8.30