Cheapest priced copy (Aether Revolt): $0.35 at Card Kingdom, near mint, their price list as of .
Inspiring Roar 
Sorcery · Common · Aether Revolt · #186
Put a +1/+1 counter on each creature you control.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 186 | Common | $0.35 | — |
| Commander Legends | 23 | Common | $0.35 | $0.49 |