You and target spell's controller bid life. You start the bidding with a bid of 1. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid. If you win the bidding, counter that spell.
Near Mint - $14.900
Lightly Played - $11.900
Moderately Played - $10.400
Heavily Played - $9.000
Damaged - $7.500
Near Mint Spanish - $14.900
Lightly Played Spanish - $11.900
Moderately Played Spanish - $10.400
Heavily Played Spanish - $9.000
Damaged Spanish - $7.500