It's based on a dream. By the time I woke up, all that I could recall of the dream was a magic cauldron producing thousands of maggots, melting symbols off the cauldron which also caused the sorceress who was using it to be sealed into a golden helmet.
It makes for an interesting story premise and I'm sure I'll sort it out at some point. But so far, I'm on the second attempt at writing it and I'm not happy with the result yet. So I will probably finish this version and then try again.
Weird for me, usually by this point, I should have at least some story that I can work with. Not this time.