Rotwidow Pack

A defensive body that quietly turns a graveyard into a life-loss clock. The 2/4 with reach reads like a fair blocker, but the activated ability recasts the whole card as a graveyard-to-drain engine: each activation spawns another 1/2 Spider with reach, then rings every opponent for one life per Spider you control. Because the token is created before the count happens, the escalation front-loads: the first activation already sees two Spiders (the Pack plus its fresh token) and drains two, the next drains three, the one after that four, with every Spider you leave standing raising the floor of the next fire. That compounding is the real engine; the drain does not stay flat, it climbs with the board. The exile cost is the discipline that keeps it from looping forever: each token permanently eats a creature from the yard, so the card burns through its own fuel and rewards a deck that keeps refilling the graveyard rather than one hoarding a single body to recur. The mana is steep enough that this reads as slow, grindy inevitability rather than a fast kill, but the activation carries no timing restriction, so the drain can fire on an opponent's end step: banking a Spider blocker for the coming attack while squeezing a point out at the last window before you untap. It sits where two black-green traditions meet, graveyard value and incremental drain, and it earns more than wall status because the wall is also the last card you cast.