Urza's Saga (usg) | ||
| #123 ⸱ Rare ⸱ French | ||
 Variations— Parts— | Contamination
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.
LegalitiesNot Legal Alchemy Brawl Explorer Future Gladiator Historic Modern Oldschool Pauper Paupercommander Penny Pioneer Standard Standardbrawl Timeless Legal Commander Duel Legacy Oathbreaker Predh Premodern Vintage RulingsThe second ability of this card is a replacement effect, not a triggered ability.
You choose whether to sacrifice a creature or not on resolution. If not, then you sacrifice Contamination. You can choose to not sacrifice even if you no longer control Contamination on resolution.
External effects that generate more mana still generate their additional mana as directed without being affected by this card. Effects which generate more mana based on what type of mana the land produces will be affected in color but not in amount.
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