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.
Near Mint - $38.300
Lightly Played - $30.700
Moderately Played - $26.800
Heavily Played - $23.000
Damaged - $19.200
Near Mint Spanish - $38.300
Lightly Played Spanish - $30.700
Moderately Played Spanish - $26.800
Heavily Played Spanish - $23.000
Damaged Spanish - $19.200