Fiery Impulse

Two damage for one mana is the floor, three is the reward, and the gap between them is what makes this a deckbuilding card rather than a flat removal spell. The base mode kills the small creatures aggressive red wants gone; the spell mastery clause asks you to load two instants and sorceries into your graveyard first, which is to say it asks whether your deck is the kind that fills its graveyard with burn and cantrips as a matter of course. In a spell-heavy shell, the condition is met by the natural rhythm of play rather than by any contortion, and the card quietly turns into a creature-only Lightning Bolt: three damage at instant speed for one mana, no downside attached. In a creature deck, it stays a two-damage instant and never resents you for it. That conditional-scaling structure (a clean baseline that improves once the graveyard hits a threshold) is the lever that lets removal reward a particular kind of deck without punishing every other one, and the three-damage ceiling sits at the long-standing magic number for fair red removal: enough to answer the creatures that matter, capped well short of threatening a player directly. The whole card lives in the tension between those two numbers, and which one you get is a referendum on what you built.