Cheapest priced copy (Foundations): $0.35 at Card Kingdom, near mint, their price list as of .
Luminous Rebuke 
Instant · Common · Foundations · #20
This spell costs {3} less to cast if it targets a tapped creature.
Destroy target creature.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 20 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 8 November 2024To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.