Okay.
I’m about to say something... literally crack worthy.
And it’s going to make SENSE.
Raven says to Yang that she can prove she knows magic is real by showing her that he did something to her and Qrow, and then proceeds to show her that she can turn into a raven. So, this implies HEAVILY that a) Ozpin possesses magical powers, and b) he gave them that transfiguration ability.
This basically offhandedly confirms that the Wizard from the Maidens tale was Ozpin. (Like we didn’t already know, but hush.)
But that’s not the point of this post.
Because when Raven is describing Ozpin’s weird fixation with her and her brother, she says she soon realized that he was actually just very interested in her whole team, not just RQ. So, why would Ozpin just give the twins that power, when he could give it to the whole team, who she made clear he was just as interested in as RQ?
Well, the first part of my theory is as follows: Summer didn’t disappear... she transformed. And she never could return. Either that, or she returned, but hasn’t transformed as a way to protect her children, without putting them in the danger of knowing where she is (because, something something, Ozpin, something something Salem, something something Silver Eyes, something something).
But... Summer must have transformed into something biological, right? I mean, the twins got to be birds, which are very good in a fight, but... wouldn’t it be dumb to have her turn into, like, a rock or a rose or something?
So what’s a creature we know, that is a protector of sorts? That keeps its children safe, and has mental faculties as a clear indicator of advanced intelligence? That is shown EXPRESSLY in relation to Team STRQ in Volume Four?
...I told you it was crazy.