I have the Sword of Undying Miasma. I think it rolled maximum weight.
If I wield it, it saps my strength and intelligence by 3 points, causes insanity and makes me invisible.
If I activate it, it dims the sky, calls down fire on me and summons wasps.
It recharges by causing me pain.
Now I am all set for an epic last stand in case I want to go out with style. More likely my game will end in “rm -r save”.