Cheapest priced copy (Tarkir: Dragonstorm): $0.35 at Card Kingdom, near mint, their price list as of .
Narset's Rebuke 
Instant · Common · Tarkir: Dragonstorm · #114
Narset's Rebuke deals 5 damage to target creature. Add {U}{R}{W}. If that creature would die this turn, exile it instead.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tarkir: Dragonstorm | 114 | Common | $0.35 | $0.49 |