There's differences between being "a Sage" and "The Sage" of the six paths. This is only my opinion, of course. To be "a Sage" you only need the Rinnegan and the six paths that comes with it. But! to be just like "The Sage" (the original legend) you need the following:
- The Sage's Eyes (Rinnegan; or at the very least the potential)
- The Sage's Powerful Chakra
- The Sage's Spiritual Energy (Yin chakra/release)
- The Sage's Body
- The Sage's Life Force (also translated as Powerful Will and sometimes stamina)
- The Sage's Physical Energy (Yang chakra/release)
In a way you've sort of reconstructed tobis plan for me. We can fill in some thing on that list though.
The Sage's Eyes (Rinnegan; or at the very least the potential)
The Sage's Powerful Chakra (the 10 tails)
The Sage's Spiritual Energy (Yin chakra/release)
The Sage's Body (edo madara. the body that was planned to be resurrected. to combine both tobi and "edo madara")
The Sage's Life Force (also translated as
Powerful Will and sometimes
stamina)
The Sage's Physical Energy (Yang chakra/release)
you've got 6 there for 6 paths. but are we sure spiritual energy is different from life force. i thought the yin/release chakra was for those powers described in your life force explination. the life force powers of the senju as yin.