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 - $3.700
Lightly Played - $3.000
Moderately Played - $2.600
Heavily Played - $2.200
Damaged - $1.900
Near Mint Spanish - $3.700
Lightly Played Spanish - $3.000
Moderately Played Spanish - $2.600
Heavily Played Spanish - $2.200
Damaged Spanish - $1.900