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At the beginning of your upkeep, sacrifice this enchantment unless you pay {W}{W}. All Mountains are Plains.
Abilities, attacks, weakness & resistance
Other cards from 30th Anniversary Edition
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Conversion (30A-313) is an enchantment from the 30th Anniversary Edition reprint set. Its continuous effect makes all Mountains into Plains, and it requires you to pay W W at the beginning of your upkeep or sacrifice it. The card changes how Mountain lands produce mana while it remains on the battlefield, creating unusual color-fixing and interaction possibilities.
Catalog pricing data as of 21 Apr 2026, 09:45
