Board Thread:Theories and Speculation/@comment-25043344-20180527201340/@comment-734582-20180614125213

Drawingblank2014 wrote: I agree that Sasuke would need to rustle up his own animals for the Animal Path, but why would he need Naraka Path if any old puppeteer could implant the same crap? It wouldn't be a bloodline power. According to the databooks, that "Same crap" is highly advanced otsutsuki weaponry that cannot be found nor made in the ninja world.

Drawingblank2014 wrote: This is supported by the fact that Nagato's edo tensei could spontaneously grow additional arms and turn his hand into a laser canon. If he returned without that weird apparatus that he was hooked up to via his chakra conduits, then the only logical conclusion is that he wouldn't have been reincarnated with any foreign or mechanical aspects. Sasori was revived in his puppet state too. Any modifications Nagato had done on himself would thus be maintained. But it's not necessary: Naruto mentions he summoned some kind of rigged armor. The databook also mentions he summons advanced weapons. Nagato doesn't just "grow" an arm, it's simply some advanced form of summoning combined with puppetry. Note that Sasori had a technique where arms could summon more arms too. It's similar.