Theory on why only Nagato can use Shrina tensei

[xxSAGExx]

I don't need reminding what Edo Nagato did beforehand, since his chakra was infinitely replenishing. And Sasuke wasn't, but as per my post above, I was never remarking about volume anyway - and only about ease of use and by extension, skill. Thus addressing Cobra's original post.

It is only you that have twisted the original meaning in a meagre attempt to throw me off.

Actually Edo's don't have infinite chakra reserves in the sense that it automatically replenish; we see Edo's run low on chakra such as Edo Minato who has a large chakra reserve. Dead bodies can't reproduce chakra but Edo's can which is why they say they have infinite chakra; they may replenish a bit faster than alive ninjas but not that fast. Also the amount of chakra does affect a jutsu's size and power. Nagato only ever said that he could have made CT bigger against Naruto but that's all; nothing about increasing its numbers.

Yeah nagato could make more than one with all that rikudo chakra they had, also I don;t know why you're saying madara was a noob when he was the one who taught obito about rinnegan usage.

Nagato doesn't have Rikudo chakra, the Rinnegan does. Obito talked about how overwhelming just 1 Rinnegan eye power and chakra was and how he did all he did even though he's not the true welder or it. Obito also said the true power of the eyes can only be awakened when both are together and they can't let Madara get both eyes. As for teaching Obito, Madara learned about getting the Rinnegan from the tablet plus even Hashirama knew of some Rinnegan jutsu even though he never fought Madara with the Rinnegan before.

Yet both are transmigrants and original rinnegan users. Also do i need to remind you what he did before he went on to create the CT.
Madara was a Juubi Jin with infinite chakra volume. So his CT is out of anyone's league other then rikudo sennin himself.

Juubi Jins don't have Infinite chakra, Kaguya who had more chakra ran out and had to replenish it. ST is a deva path jutsu; both Madara and Sasuke both use BT and CT which are also both Deva path jutsus.

It's honestly weird. All rinnegan user except for hagoromo seem like noobs compared to nagato when it comes to rinngan usage and controlling. Having that said, I believe it was just a self taught tech which he discovered in his early years, No one can use it because no one had the knowledge on it, most likely.(hagormo being an exception)

That's because Madara and Sasuke didn't have it for years like Nagato and even then they were using the Rinnegan on a higher degree. Deva path consist of ST, BT, and CT; it they can use CT and BT then nothing says that they can't use ST.

Plot + The Sages/Juubi chakra does wonders.

If sasuke/madara had to rely on their natural chakra pools to wield their rinnegan, I doubt they would be anywhere near as impressive as they are.

Let alone them attempting to use double rinnegan that doesn't originally belong to them like Nagato had to do.

Madara is the true welder of the Rinnegan, Obito talked about how bad it would be if he got them by saying how just 1 Rinnegan was a lot for him and how he couldn't weld both eyes because it was too much; while also saying the true powers comes out when you have both eyes. Nagato doesn't have Rikudo chakra, the Rinnegan does. Madara has it by getting both Ashura and Indra chakra to awaken Hagoromo's and Sasuke was given his. Also, Madara has a large reserve himself, he fought against Hashirama all day while controlling Kurama for a good part of that fight; Sasuke was only 17, current Sasuke probably would have around Madara's reserve and that's not including Hashirama cells boosting their stamina.