Mangekyou power for Rubes...hmm...



I'd probably agree with Kaze in saying that Kamui could be a good power...or maybe even an ability similar to the Tsukuyomi/Amaterasu that only works on Grimm or those who have Grimm melded with their body (like Cinder, which is why I believe she was so injured at the end of Season 3. Due to the bug that was used to absorb Amber's power).