Cheapest priced copy (Explorers of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Veteran's Reflexes 
Instant · Common · Explorers of Ixalan · #5
Target creature gets +1/+1 until end of turn. Untap that creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Explorers of Ixalan | 5 | Common | $0.35 | — |
| Worldwake | 23 | Common | $0.35 | $0.49 |