Firescreamer

Pour all the red mana you like into this 2/2 Kavu: each activation buys exactly one point of power, and nothing else. The body is a black creature whose only ability cares about a color it cannot produce, and that contradiction is the entire design intent. This is two-color advocacy reduced to its bluntest teaching form: a creature in one color taxed by a second to do anything at all, demonstrating the gold-pair thesis without ever rewarding it generously enough to be worth building around. Wizards has reused this exact line for color-pair-adjacent commons across many years, a one-color body that asks for a splash to function, and Firescreamer sits at the least efficient end of that idea by construction. The firebreathing is doing the work firebreathing always does: it lives at instant speed, held until blockers are declared so the pump complicates combat math or pushes a few extra points through an open lane, rather than committing mana to a 2/2 that might eat removal first. The trouble is the rate. A single point of power per red mana is the thinnest possible version of that mechanic, so the instant-speed flexibility almost never amounts to a real combat threat. What the card does is forgettable; what it stands for is durable. It is a one-line lesson with no reminder text needed: a black card built to make you want to play red, a small artifact of the era when the game decided color pairs should ask for both colors even at common.