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 - $21.100
Lightly Played - $16.900
Moderately Played - $14.800
Heavily Played - $12.700
Damaged - $10.600
Near Mint Spanish - $21.100
Lightly Played Spanish - $16.900
Moderately Played Spanish - $14.800
Heavily Played Spanish - $12.700
Damaged Spanish - $10.600