Conversion

Enchantment, 2WW (4)
At the beginning of your upkeep, sacrifice Conversion unless you pay {W}{W}.
All Mountains are Plains.¹
Illus. Jesper Myrfors

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: The Conversion effect is a continuous effect. There is no chance to tap a just-played mountain for red mana before it becomes a plains.
• 10/15/2006: Will not add or remove Snow Supertype to or from a land.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (5/18)	Fourth Edition (Uncommon) Revised Edition (Uncommon) Unlimited Edition (Uncommon) Limited Edition (Beta) (Uncommon) Limited Edition (Alpha) (Uncommon)