Ajani's Response (SOS)

Instant

This spell costs {3} less to cast if it targets a tapped creature. Destroy target creature.

Niche removal for white control and tempo decks. Luminous Rebuke offers efficient creature removal when your opponent has tapped creatures—a common scenario in combat-heavy formats—but at full cost it's significantly overpriced compared to staple answers like Swords to Plowshares or Solitude. Best in Limited or as a sideboard option in Pioneer and Modern where you can reliably trigger the discount.

Secrets of Strixhaven — Common