What if where ever orochimaru and sasuke goes is some place that will help sasuke revive back someone or give him more power to stop madara. and when oro tell him what to do sasuke just takes over oro all over again or orochimaru just tells him that he doesn't have enough power to do what he wants so sasuke offers his body to help him out, oro takes his body and gains more power then sasuke takes over control back and this power gives sasuke's EMS a major power boost so that he can do edo tensei but a version that brings them back permanently. . . . . . . .