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 - $10.800
Lightly Played - $8.600
Moderately Played - $7.600
Heavily Played - $6.500
Damaged - $5.400
Near Mint Spanish - $10.800
Lightly Played Spanish - $8.600
Moderately Played Spanish - $7.600
Heavily Played Spanish - $6.500
Damaged Spanish - $5.400