Cheapest priced copy (Mercadian Masques): $0.35 at Card Kingdom, near mint, their price list as of .
Puffer Extract 
Artifact · Uncommon · Mercadian Masques · #310
{X}, {T}: Target creature you control gets +X/+X until end of turn. Destroy it at the beginning of the next end step.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mercadian Masques | 310 | Uncommon | $0.35 | $2.99 |