Originally Posted by DRAGONBPY
Nice theory. We see Obito using wood style as well. Is it possible that the Gedo is made from wood style by Madara
I doubt it, Gedo is supposed to be of the Outer Path...I am guessing similar to those you reach Susanoo with both MS eyes....I am guessing Rinnegan has similar capabilities..maybe you can summon the Gedo Mazou with the similar training. Nagato summoned it through a heated situation of grief and anger..We have yet to find out when and how Madara summoned it.
Also Madara said he is alive because of the Gedo...I think he awoke RG, somehow summoned the outer path Gedo Mazou and then had the idea to come back even better than before. Madara and Zetsu are alive solely because of the use of its power.