Nagato's incredible power stemmed mainly from his Kekkei Genkai, the Rinnegan. This was originally possessed by the Sage of the Six Paths, the world's first ninja and the founder of modern ninjutsu. The Rinnegan's abilities are largely unknown, but it does allow the user to use all types of elemental chakra, and allowed Nagato to master every technique Jiraiya taught him. It also enhanced his vision of chakra in a similar manner to the Hyuga clan's Byakugan and Uchiha Clan's Sharingan, allowing him to see the chakra of barrier techniques around Konoha and the chakra gathered at the feet of Tsunade.
Rinnegan - Naruto Wiki - Narutopedia

He did not show jiryaas techniques
HE did show aa jutsus tha made HANZO runaway

BUt he did no show using al elementss cause mosst of these threads on the manga section where discussing about elements

& i think there was still more do the rinnegan
But if he used it it really would have deystoryed existance

(BUT NOw nagato belives in NARUTO )