This terrible weapon has killed many fell beasts. Once a foe is hit with it, it is slowly, inexorably screwed in until death results. The wielder is defenceless while turning it.
Roll to hit. Death in 10 rounds. Wielder has unarmored AC and can't use a shield.
Haven't tried this one in game. what do you think? It seems the key is how many rounds, too short and it's a death ray, too long and it's useless unless you're fighting Galactus.