[maximilianjenus]

Originally Posted by Kudryavka

It's widely believed by fans right now that

Spoiler for spoiler:

Walpurgis Night is Homura's Witch form, perhaps from a future timeline in which Homura finally fails to save Madoka and becomes a witch. The gears relate to time, and her immense power could be a side effect of Homura's time travelling, like Madoka's immense power is.

are there any pages / posts that have more info in this theory, this one sounds good regarding akasha.