Scalding Salamander

The design conceit here is a body that punishes the X/1 board state every time it swings: a repeatable attack-triggered pinger that sweeps the defending player's grounded small creatures while the Salamander goes in for damage of its own. That puts the burden of balance on three places at once. The trigger fires on attack, not on entering or as an activated ability, so the value only accrues if you can keep sending it into combat and surviving. Its own 2/1 frame means it dies to any X/1 blocker or attacker it once bullied, so it cannot stand in front of a board it would clear without help. And the "without flying" clause is the real pressure valve: anything in the air is immune, which keeps the effect honest against the decks that go over the top rather than wide. The result is a creature that wants to attack into a developed-but-grounded board, the exact texture of an early go-wide opponent, and falls flat against evasion or a single larger blocker. It is clean, narrow red small-creature hate stapled to an aggressive curve-filler, built to tax token strategies and mana dorks rather than to headline a deck. The damage is confined to creatures the defending player controls, so the sweep never touches your own side; and because the trigger resolves back in the declare attackers step, the optional "may" only governs the ping itself, never the Salamander's combat damage, which lands on schedule regardless.