Cheapest priced copy (Onslaught): $0.35 at Card Kingdom, near mint, their price list as of .
Shade's Breath 
Instant · Uncommon · Onslaught · #167
Until end of turn, each creature you control becomes a black Shade and gains "{B}: This creature gets +1/+1 until end of turn."
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Onslaught | 167 | Uncommon | $0.35 | $0.49 |