I was thinking how soul gems are kind of like horcruxes, and then I decided this meant that Voldemort was a puella magi, and then I decided that instead of having one soul gem he'd have seven, and thus seven transformations he could do.
I've already designed two, one based on the diadem and one on the ring. c:
This is me ignoring my priorities.
edit:

you can see mah uglee face lol