Contamination
Enchantment
At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a creature.
If a land is tapped for mana, it produces instead of any other type and amount.
Printings & Conditions (3)
The List (PLST)(The List)#USG-123Rare
Urza's Saga (USG)(Urza's Saga)#123Rare
Mystery Booster 2 (MB2)(Future Sight) (Mystery Booster 2)#178SOut of stock