Sacred Fire

Two damage and two life at instant speed is a fair rate, roughly what a two-color removal-plus-lifegain spell has always cost. The flashback is where the design actually spends its ink: a second copy for six mana out of the graveyard, tacking another two life onto another two damage, so the card asks to be cast twice across a game rather than optimized for a single big turn. That structure is what pins it to a specific job. It is not a finisher and not a tempo play; it is attrition insurance for the midrange mirror, where four points of damage and four points of life spread across two casts is exactly the arithmetic that decides races that come down to nothing. The exile clause that ends every flashback card caps that at two uses, which is the balancing pressure here: the effect is repeatable but finite, so it slows a grind without ever locking one down. Boros as a color pair rarely gets recursion, since white and red both traffic in one-shot burn and combat, and a burn spell that answers a small threat, stabilizes a life total, and then does it again from the yard is the kind of long-game tool those two colors usually have to reach outside their identity to find.