Board Thread:Theories and Speculation/@comment-28939725-20161201164545/@comment-734582-20161204105756

Lorenzo.r.1st wrote: first: the rinnegan can only be achieved if u have the chakra from the sage of the sp, right? and nagato has rinne so that's one problem solved. second: ems is when u steal someone else's eyes if ur ms is goin blind, but u still remain with all ur abilities, INCLUDING SUSANOO, while using another persons eyes even though u dint have theirs spirits and stuff. get now? But that has nothing to do with what i'm talking about. The origin of sharingan powers is in the brain. Changing eyes doesn't change that, which is why powers are conserved even when eyes are switched. But Nagato doesn't have Madara's brain.

Obito on the other hand was able to mimic an Edo Tensei and gave Kakashi access to his powers, including Susanoo.