Seismic Stomp

The Falter effect, stripped to its cheapest honest form. The job is singular: pull every grounded blocker out of the way for one swing, and let an aggressive board finish. What separates this from a true combat trick is what it surrenders to gain its breadth. It does not pump anything, it does not draw a card, it does not care which creatures attack: it simply revokes blocking from everything on the ground, including the caster's own non-flyers, which never matters because the caster is the one swinging. The type line is the leash. As a sorcery, it can only be cast in a main phase, never in response to the opponent's blocks, and because the effect lasts only "this turn," it has to fire on the same turn as the attack, before blockers are declared. That is the whole gap between a Falter like this and an instant-speed trick: the sorcery makes you decide on lethal before combat begins, rather than waiting for the opponent to misallocate blockers and punishing it after the fact. Flying still slips through, which is the deliberate seam in the design: a single airborne wall undoes the plan, so the effect rewards a ground game that is already winning and just needs the door held open for one swing. Plain, narrow, and exactly as wide as its mana suggests.