Board Thread:Theories and Speculation/@comment-3568954-20200620201752/@comment-3568954-20200621061136

Ravenlot 27 i disagree, Orochimaru has proven that you can actually create a new body via chakra alone when he was forming from out of sasuke. right after Itachi sealed that fragment of soul away. and while zetsu had hashirama cells in him, that wasn't the actual same thing. that was just a body imbued with hashirama's cells

the Edo Tensei's immortality factor is based around the sealing tags that are embedded into the body, said jutsu isn't complete until the body is bound to the body with those tags. and we know that every seal has a different purpose.