Cheapest priced copy (Tarkir: Dragonstorm): $0.35 at Card Kingdom, near mint, their price list as of .
Sarkhan's Resolve 
Instant · Common · Tarkir: Dragonstorm · #158
Choose one —
• Target creature gets +3/+3 until end of turn.
• Destroy target creature with flying.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tarkir: Dragonstorm | 158 | Common | $0.35 | $0.49 |