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 - $15.70
Near Mint Non-English - $15.70
Lightly Played - $14.10
Lightly Played Non-English - $14.10
Played - $11.00
Played Non-English - $11.00
Heavily Played - $9.40
Heavily Played Non-English - $9.40
Damaged - $7.90
Damaged Non-English - $7.90