Slaying Fire

Adamant is a color-commitment mechanic, and this instant is one of the cleaner statements of what it costs and pays. The floor is a familiar rate: three mana for three damage, playable but unremarkable next to the one-mana burn spells red decks would rather run. The premium comes only if you pay in dedicated red pips, and the reward is precisely one extra point of damage, enough to push it past the four-toughness bodies and the twenty-life clock a burn deck cares about. That is the whole trade Adamant asks: forgo the splash, run the untextured red manabase, and the burn spell scales with your discipline rather than your discovery. Unlike a hybrid or a devotion payoff that reads your permanents, this checks the mana spent to cast the spell itself, so the condition is settled at the moment of casting and nothing on the board can turn it off. What complicates the whole idea is that the mechanic rewards exactly the deck that least wants to pay three mana for damage: a heavily committed mono-red list would rather spend that mana faster and cheaper. Adamant makes the most sense as a nudge toward color purity in decks already there, a small tax refund for not greeding the mana, and Slaying Fire is the burn spell built to demonstrate it without any wrinkle beyond the extra point.