Cheapest priced copy (Chronicles): $0.49 at Card Kingdom, near mint, their price list as of .
Angelic Voices 
Enchantment · Rare · Legends · #4
Creatures you control get +1/+1 as long as you control no nonartifact, nonwhite creatures.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $14.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Chronicles Foreign Black Border | 3 | Rare | — | — |
| Chronicles | 3 | Rare | $0.49 | — |
| Legends | 4 | Rare | $14.99 | — |
One ruling from Wizards of the Coast
- 4 October 2004You get the bonus if all of your creatures are white or artifact even if they also have other colors or qualities. So, if your only creature is a white and green creature, or a red artifact creature, you would get the bonus.