Shepherd of Rot

Pure symmetrical life loss is the rarest shape a finisher can take, and this one builds its entire payoff out of it: every tap subtracts a point from each player for each Zombie in play, controller and Cleric included. Nothing gains life, nothing targets, and nothing scales down as the count climbs. The symmetry is the constraint that keeps it honest. With one or two Zombies it chips everyone for a trivial amount, you included, so it never became a generic top-end. It only earns its keep when the board is dense with the type, and at that density the activation flips from a slow ticking clock into a race the controller wins: both players bleed the same number per tap, but the side fielding the army sits on a far larger life total to spend, so the symmetric drain is lopsided in practice. That contingency (board-state thick versus board-state thin) is the whole design. Ignore the 1/1 frame: this is a wincon shell that converts a committed army into reach the creature type otherwise lacks, no lord pump, no fetch, just a button that ends games once the count is up. The resilience is narrow but real: the life loss is untargeted and repeatable, so it sidesteps the hexproof and redirection that blunt point-and-shoot burn, and there is nothing to fizzle once the ability is on the stack. The body stays fragile, a 1/1 with no haste or protection that any removal spell answers, so the game it wins is the one where you untap with it and tap it before they find the kill.