Withering Hex

A removal aura whose lethality is outsourced to a mechanic neither player fully controls: it lands inert, and every cycle trigger from anyone at the table feeds it another plague counter. That ties its kill speed to how much card-filtering the game happens to contain. The structural quirk is that it punishes opponents for engaging with their own deck: cycle a land to dig, and the creature parked under this drifts a step closer to dying. But the trigger reads "a player," not "an opponent," so the controller can fuel it too, cycling away dead cards to shrink the target while turning a hand over. Against a clean one-mana kill spell the rate is dreadful and the timing unreliable, but the ceiling is uncapped in a way fixed removal never is. There is no maximum plague count, so a long grind can turn a single black mana into a creature-eating snowball that only accelerates. This is feast-or-famine design at its most literal: in a game thick with filtering, the enchantment grows startlingly fast; in a slow one with no cyclers on either side, it sits doing almost nothing. It belongs to an era when Wizards was willing to gate a card's entire power band behind a set's central mechanic and let it swing wildly between unplayable and oppressive depending on what the table chose to do.