At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.
Near Mint - $8.000
Lightly Played - $6.400
Moderately Played - $5.600
Heavily Played - $4.800
Damaged - $4.000
Near Mint Spanish - $8.000
Lightly Played Spanish - $6.400
Moderately Played Spanish - $5.600
Heavily Played Spanish - $4.800
Damaged Spanish - $4.000