Mai, Scornful Striker

Punishing noncreature spells is old ground: Eidolon of the Great Revel, the various pingers and taxing enchantments that make a spell-heavy opponent bleed for their trouble. What separates this build is that the tax hits every player, its controller included, and it fires on the cast rather than resolution, so it bites even the countered or fizzled spell. That is a deckbuilding constraint dressed up as an aggressive threat: pair it with a creature-heavy shell that leans on combat and evasion, and the two-life bleed becomes an asymmetric clock; load up on removal, ramp, and card draw yourself and you are the one paying the toll. First strike on a modest body keeps it relevant in the red zone rather than trading into every blocker, which matters because the design wants this creature attacking while the life-loss engine grinds in the background. The tension it resolves is a familiar one for aggressive black: how do you build a punisher that is a real threat and not just a hatebear? The answer is to make the punishment indiscriminate and force the pilot to build around avoiding their own tax, which turns an ordinary two-drop into an axis the whole deck bends toward.