Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.
NM-Mint - $0.25
Lightly Played - $0.24
Moderately Played - $0.21
Heavily Played - $0.19
Damaged - $0.15
NM-Mint Non English - $0.25
Lightly Played Non English - $0.24
Moderately Played Non English - $0.21
Heavily Played Non English - $0.19
Damaged Non English - $0.15