Cheapest priced copy (Ice Age): $0.49 at Card Kingdom, near mint, their price list as of .
Shyft 
Creature — Shapeshifter · 4/2 · Rare · Ice Age · #96
At the beginning of your upkeep, you may have this creature become the color or colors of your choice. (This effect lasts indefinitely.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ice Age | 96 | Rare | $0.49 | — |
2 rulings from Wizards of the Coast
- 1 October 2008Shyft’s ability won’t let you make it colorless. Colorless is not a color.
- 1 October 2008The ability’s effect has no duration. Shyft will remain the chosen color or colors until the game ends, it leaves the battlefield, or some other effect (such as the next time its ability resolves) changes its colors.