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 - $8.700
Lightly Played - $7.000
Moderately Played - $6.100
Heavily Played - $5.300
Damaged - $4.400
Near Mint Spanish - $8.700
Lightly Played Spanish - $7.000
Moderately Played Spanish - $6.100
Heavily Played Spanish - $5.300
Damaged Spanish - $4.400