Erebor Flamesmith

The Guttersnipe template, resized down. Both fire on the same trigger, and both point their damage at each opponent rather than any target; the difference is the arithmetic and the body. Guttersnipe deals two on a three-mana 2/2, while this deals one on a two-mana 2/1. That single point of damage per spell changes what the card wants around it. One per cast is not a burn engine so much as a clock that only counts if the spells keep coming, which pushes toward high-density, low-cost cantrips and cheap burn rather than a slower control shell. The 2/1 body is the honest half of the bargain: a creature that pings on every instant or sorcery is a removal magnet, and one toughness means nearly anything kills it, so the payoff sits behind the question of whether it survives to matter at all. The wording is worth noting: the damage is untargeted, hitting each opponent directly, so it slips past player hexproof or shroud and scales with the number of opponents rather than the board. Against a single opponent that incidental damage is reach, the thing a red creature deck leans on when the ground stalls; add more opponents and it becomes a symmetrical drain the caster never has to aim. A spells-matter reward built for one tempo profile: play cheap, play fast, and let the pings close a game the creatures could not.