I've had enough of all this tomfoolery, time to end this debate...
We'll start off by starting with the Rinnegan. It has been established that the Rinnegan is the final form/evolution of the Sharingan and that ONLY Madara has unlocked it - post hashirama fight. He died later on in the future (this isn't really pivotal so i'll keep it vague).
Now, Nagato had the Rinnegan but he never had the Sharingan and surely didn't have enough time, nor the sibling to create the mangekyou/EMS so it's safe to assume it was transplanted but not by Madara, no no... The original bearer of Madara's light. You see, Madara's Rinnegan eyes weren't his own, they were Izuna's and so the Rinnegan rightfully belonged to him and thus were taken from Madara and given to Nagato in order to sync himself with Gedo Mazo and once again revive Madara once the Jinchuuriki were all captured (thanks to the Akatsuki) but that failed since Nagato died and Gedo Mazo needed a new host to sync with - Sasuke Uchiha, who is nearly reached the stage to unlock the Rinnegan and fall into Tobi's trap.
Tobi did say that he wanted to use Gedo Mazo for himself but that doesn't entirely mean he wanted to use it literally for himself but for his own wishes... Tobi being Izuna perfectly explains the correlation between him, madara, the rinnegan and Nagato, also some other bits like why he used Madara's war fan and possessed Hashirama's cells.
Admittedly, there are a few problems; i.e, why he says he is a shell of his former self, or something along those lines but I believe, that Madara and Izuna kept a close relationship until the time of his departure and also explains why they share the same idea of an infinite tsukiyomi.
Once thing I'm struggling to make a connection is, If Tobi used Nagato to revive Madara, then how does Madara know Nagato... Unless Madara knew he was going to die and used Nagato to revive him in a near-perfect form, much like a second life...
We'll start off by starting with the Rinnegan. It has been established that the Rinnegan is the final form/evolution of the Sharingan and that ONLY Madara has unlocked it - post hashirama fight. He died later on in the future (this isn't really pivotal so i'll keep it vague).
Now, Nagato had the Rinnegan but he never had the Sharingan and surely didn't have enough time, nor the sibling to create the mangekyou/EMS so it's safe to assume it was transplanted but not by Madara, no no... The original bearer of Madara's light. You see, Madara's Rinnegan eyes weren't his own, they were Izuna's and so the Rinnegan rightfully belonged to him and thus were taken from Madara and given to Nagato in order to sync himself with Gedo Mazo and once again revive Madara once the Jinchuuriki were all captured (thanks to the Akatsuki) but that failed since Nagato died and Gedo Mazo needed a new host to sync with - Sasuke Uchiha, who is nearly reached the stage to unlock the Rinnegan and fall into Tobi's trap.
Tobi did say that he wanted to use Gedo Mazo for himself but that doesn't entirely mean he wanted to use it literally for himself but for his own wishes... Tobi being Izuna perfectly explains the correlation between him, madara, the rinnegan and Nagato, also some other bits like why he used Madara's war fan and possessed Hashirama's cells.
Admittedly, there are a few problems; i.e, why he says he is a shell of his former self, or something along those lines but I believe, that Madara and Izuna kept a close relationship until the time of his departure and also explains why they share the same idea of an infinite tsukiyomi.
Once thing I'm struggling to make a connection is, If Tobi used Nagato to revive Madara, then how does Madara know Nagato... Unless Madara knew he was going to die and used Nagato to revive him in a near-perfect form, much like a second life...