[David stares at the screen for a moment, because there's a lot of questions. Ever since angels started falling, none of them would have the juice to pull off something like this. And the ones that would, wouldn't work with the Winchesters for some random human.

But, there's a thought.]

You know, there's this thing with changeling Fae children. Nine times out of ten human blood dilutes the magic, and they have to work twice as hard to get half as good. But on that tenth time, they'll wind up with too much power. All of the raw talent, but none of the control.

[He rubs a hand against the back of his neck. The Salvatore School has rules about vampires turned as teenagers that they accept as students. They need to be actual teenagers. He's willing to bet the same rule would apply to other supernatural creatures. They wouldn't let an angel wearing a teenager suit play at being a student, and an angel wouldn't be able to fake it.]

I wonder if the same holds true for a nephilim.