Board Thread:Naruto Discussions/@comment-30881771-20170604165052/@comment-734582-20170605074635

Themadarafan27 wrote: Madara didn't die at the Valley of the End. He survived that fight as it is said many times. He did die. He was revived via Izanagi, but he did die. Ravenlot 27 wrote: It seems that Kabuto tampered with his reanimated body to restore it into the "prime state", i.e. to its youthful appearance and powers. If i remember correctly, Hashirama and Tobirama had their appearances slightly adjusted to better fit their original selves (Hiruzen v Orochimaru). Seems to me that the Edo Tensei can simply change the appearance of that which is called from the Impure World, to fit whatever the user wants. (or to fit an earlier stage of their lives)

I don't see how this affects their power exactly. I even wonder whether Madara awoke his Rinnegan as an Edo Tensei, because the statements regarding Madara simply don't add up (According to Hagoromo, his transmigration was over). Seems to me that it was simply a cosmetic alteration. It's not clear how the Rinnegan plays into this, but then again it's not clear how he had EMS in this form either. Perhaps Kabuto also gave him some eyes?