That was very confusing, and pretty fucking epic. This is the second time they combined Enton and Futon and both times it's been epic as fuck.
Although I doubt it's going to do much, he has a Mangekyo and he also has the Rinnegan. Obito can either just put the flame out or use Shinra Tensei to push it off. Still, the attack itself simply landing was a nice hit. Would have been cool if the effect of the Rasen-Shuriken stayed and was just assisted by the Amaterasu flame (like all the microscopic little needles going through his cells with Enton attached to them). That would have been pretty sick, but oh well.
Also can't wait for Hashi vs Madara, get to see what the full Susano'o can really do. (Last time we just got a sneak peak and he's like LOLNOPE FUCKIT!)
And those smiles at the ending just wrapped it all up nicely with a bow. ^_^