Board Thread:Naruto Discussions/@comment-25442710-20140920121351/@comment-26302001-20141006012447

Obito at least should have awakened his own Rinnegan. This also explains Nagato's power and proficiency with the Rinnegan and why he was Edo Tensei's with eyeballs that were not his. Itachi was blind at death, yet was Edo Tensei's with full eyesight and his own eyes, even though Sasuke had his eyes. So it makes me think that Nagato did indeed awaken his own Rinnegan, using Madara's Rinnegan. It now makes sense as to why Obito called him the 3rd Sage of Six Paths and called Madara the 2nd Sage of Six Paths..