Cheapest priced copy (Classic Sixth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Dragon Mask 
Artifact · Uncommon · Classic Sixth Edition · #283
{3}, {T}: Target creature you control gets +2/+2 until end of turn. Return it to its owner's hand at the beginning of the next end step. (Return it only if it's on the battlefield.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.35 to $0.39 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Classic Sixth Edition | 283 | Uncommon | $0.35 | — |
| The List | VIS-144 | Uncommon | $0.35 | — |
| Visions | 144 | Uncommon | $0.39 | — |