Cheapest priced copy (Bloomburrow): $0.35 at Card Kingdom, near mint, their price list as of .
Rabid Gnaw 
Instant · Uncommon · Bloomburrow · #147
Target creature you control gets +1/+0 until end of turn. Then it deals damage equal to its power to target creature you don't control.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow | 147 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 26 July 2024If the creature you control is a legal target but the creature you don’t control isn’t as Rabid Gnaw resolves, the creature you control will get +1/+0 until end of turn, but no damage will be dealt. If instead the creature you control is an illegal target but the creature you don’t control is still a legal target, nothing will happen when Rabid Gnaw resolves.