Cheapest priced copy (Dominaria): $0.35 at Card Kingdom, near mint, their price list as of .
Run Amok 
Instant · Common · Avatar: The Last Airbender Eternal · #284
Target attacking creature gets +3/+3 and gains trample until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
6 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria | 140 | Common | $0.35 | $0.49 |
| Kaldheim | 147 | Common | $0.35 | $0.49 |
| The List | DOM-140 | Common | $0.35 | — |
| Avatar: The Last Airbender Eternal | 258 | Common | $0.35 | $0.49 |
| Avatar: The Last Airbender Eternal | 284 | Common | — | — |
| Star Trek Commander | 582 | Common | $0.35 | $0.35 |