Board Thread:Speculation House/@comment-26226441-20180127223551/@comment-34760680-20180220150730

Hoepfully this posts. Basically the theory says that it came from Salem just like how the maidens came from Ozpin. Also neither of them have selfless reasons for giving up these powers. Ozpin and Salem gave up parts of their human balance of light and dark. Salem getting rid of the light and Oz the dark. Would explain why the eyes work on grimm and maidens IMO.