Starting to think the witches are actually puella magi that went bad somehow. I mean if you draw a parallel to the Faust references, Kyubey is the devil who grants one wish (Mephistopheles) and the puella magi are all Faust. In Faust, Faust is given a certain time period where he can use Mephistopheles power for his desires but once that time is up he will be eternally damned. So maybe the magical girls are using Kyubey's power to gain one wish and become puella magi. Then once they die/lose their magic power due to no grief seeds/a certain time passes, they become witches. That would also explain why witches can recharge puella magis magic with grief seeds...
Last edited by Firzin; 01-21-2011 at 05:36 AM.