Board Thread:Wiki Discussions/@comment-25134516-20140703093231/@comment-24531362-20140730122403

I have a theory on this. The Rinnegan's least often remembered power lets the user have affinity for all five basic natures of chakra. I speculate that this, too, was split between Asura and Indra. The Sharingan kept all of the dojutsu stuff (clarity of vision, seeing chakra, penetration of illusion) as well as the ability to copy techniques regardless of nature. However, it requires work and training on the user's part before the techniques can be used (a la Sasuke and Primary Lotus). The instant use part went to Wood Release, according to my theory. Specifically, it manifests in the form of Wood Release: Several Thousand Hands and, probably, Sage Art: Wood Release: True Several Thousand Hands (it doesn't make sense for the weaker version to have powers the stronger lacks). These techniques allow for instant use of all five natures as shown by Guruguru. The release has also only been manifested naturally in Asura's transmigrate, Hashirama. I'm not saying that Naruto will awaken Wood Release, nor am I confirming that it came from Asura or stating that anyone is known to have had it naturally other than Hashirama. I just think it's possible, and it would explain the mysteries surrounding Wood Release.