Cheapest priced copy (Bloomburrow): $0.35 at Card Kingdom, near mint, their price list as of .
Mabel's Mettle 
Instant · Uncommon · Bloomburrow · #21
Target creature gets +2/+2 until end of turn. Up to one other target creature gets +1/+1 until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow | 21 | Uncommon | $0.35 | $0.49 |