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 - $5.000
Lightly Played - $4.000
Moderately Played - $3.500
Heavily Played - $3.000
Damaged - $2.500
Near Mint Spanish - $5.000
Lightly Played Spanish - $4.000
Moderately Played Spanish - $3.500
Heavily Played Spanish - $3.000
Damaged Spanish - $2.500