Twisted Sewer-Witch

A single enter trigger that reads its output off a board you may have already built: it makes one Rat, then hangs a Wicked Role on every Rat you control, so the number of Roles distributed tracks your existing Rat count rather than resetting to one. The Role is the payload, not the Rat. Each Wicked Role that reaches a graveyard costs each opponent one life, which turns a wide Rat presence into a stream of incremental life loss instead of a single burst. The Role rules build in a useful piece of friction: a creature can only carry one Role you control, so layering a fresh one sends the previous Role to the graveyard and fires its drain on the spot. That makes Role reassignment a controllable trigger rather than dead text, and it rewards a shell that keeps producing bodies to receive new Roles and does not mind feeding them to the graveyard a point at a time. The "for each Rat" scaling is the reason this outperforms a plain token-maker: the same 3/4 that walks in and makes one Rat can, on a developed board, deal out half a dozen death-triggering auras across creatures that were already yours. The body is almost incidental; this is a payoff piece for go-wide, sacrifice-adjacent black, converting a swarm into a slow bleed one drained life at a time.