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 - $4.800
Lightly Played - $3.900
Moderately Played - $3.400
Heavily Played - $2.900
Damaged - $2.400
Near Mint Spanish - $4.800
Lightly Played Spanish - $3.900
Moderately Played Spanish - $3.400
Heavily Played Spanish - $2.900
Damaged Spanish - $2.400