Magic: the Gathering - Datenbank

Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another. (For example, you may change "nonblack creature" to "nongreen creature" or "forestwalk" to "islandwalk." This effect lasts indefinitely.)  ["The world, I've come to realize, is a blank canvas on which to paint." —Ixidor, reality sculptor]