Breath Weapon

A red sweeper priced for two toughness that exempts creatures sharing the Dragon subtype: everything but Dragons takes the hit, which makes this a board wipe you can fire off from behind a wall of scaled fliers. The two-damage ceiling is the real constraint, and it does two things at once. It keeps the card honest against anything that has outgrown the early curve, and it turns the Dragon clause from a flavor gesture into a genuine asymmetry engine: pack enough of the tribe and this clears the opposing swarm while leaving your own board untouched, a one-sided Pyroclasm that costs you nothing but the mana. Red rarely gets to sweep without eating its own creatures, so the usual play pattern is to cast something like this before you commit, not after; the Dragon exemption inverts that, letting you develop a resilient board first and reset the ground around it. As an instant it also chooses its window: hold it through a combat step and it becomes a blowout against an attacking token line or a flock of small utility creatures, rather than a preemptive clear. The rate is modest by design, but the exemption is what makes it worth casting, and it pays off building toward the one tribe the spell was written to protect.