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 - $5.00
Lightly Played - $4.00
Moderately Played - $3.50
Heavily Played - $3.00
Damaged - $2.50
Near Mint Spanish - $5.00
Lightly Played Spanish - $4.00
Moderately Played Spanish - $3.50
Heavily Played Spanish - $3.00
Damaged Spanish - $2.50