Warning for this may contain spoilers
As I read the Naruto Episode 656 Page 14, Obito cast Rinne Tensei then suddenly the black zetsu appeared then cast another Rinne Tensei then poof Madara is revived with real body. Now, I'm lost. What happened to Obito? Do Madara switched body with Obito? or does he consumed by the Black Zetsu? According to the wiki, Rinne Tensei can re-infuse new life force energy to the bodies of those who have died. With that said, why Madara re-infused with Obito's body? and how come that Obito died (or is he dead)? What happened to the Black Zetsu? I don't know how to put this up but here's the image sequence: