Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.
Near Mint - $14.700
Lightly Played - $11.800
Moderately Played - $10.300
Heavily Played - $8.900
Damaged - $7.400
Near Mint Spanish - $14.700
Lightly Played Spanish - $11.800
Moderately Played Spanish - $10.300
Heavily Played Spanish - $8.900
Damaged Spanish - $7.400