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 - $21.700
Lightly Played - $17.400
Moderately Played - $15.200
Heavily Played - $13.100
Damaged - $10.900
Near Mint Spanish - $21.700
Lightly Played Spanish - $17.400
Moderately Played Spanish - $15.200
Heavily Played Spanish - $13.100
Damaged Spanish - $10.900