Text (LG+errata): Enchant creature. ; {0}: Enchanted creature becomes the color or colors of your choice. Activate this ability only once each turn. [Oracle 2009/07/08]
The color change does not wear off at end of turn. [D'Angelo 2000/03/03]
You can choose any single color or combination of colors. The valid colors are Black, Blue, Green, Red, and White (see Rule 105.4). [D'Angelo 2000/03/03]
Extended tournaments (see Rule 913) have always banned this card.