Akki Underminer

Edict effects almost always live on a sorcery or an enters trigger; the wrinkle here is that the sacrifice rides on combat damage, which moves the timing entirely onto the attack step and turns a 1/1 into a recurring tax that fires every time it connects unblocked. The trade the design makes is brutal: a one-power body that has to land its hit, which means it only earns its keep if the opponent has nothing they want to chump with and no profitable block to make. Against an empty board it grinds down a single permanent per swing; against a developed board it dies to anything or simply gets blocked into irrelevance. That fragility pays for the whole package, because a sacrifice-on-damage trigger with evasion or protection stapled on would be far above this slot's pay grade. The effect also respects the defender's agency in a way most disruption does not: the controller picks the trigger, but the victim picks the permanent, so it shaves the worst card off the top rather than surgically removing a key piece. It rewards making the body unblockable by other means, since the engine scales not with its own stats but with how reliably it lands. A slow goblin that asks for help connecting on its own; given that help, it becomes a per-turn edict that never has to be recast.