Board Thread:Versus Debates/@comment-29517168-20160328040252/@comment-734582-20160402160624

JouXIII wrote: Hmm... Didn't we had some kind of practise that if OP doesn't specify what versions of characters are facing each other, we would have to assume it's the strongest versions? I would actually assume it's the most recent, relevant form. The relevant part because Madara's most recent form is "dead" which is obviously not relevant to any fight.

But yea, that makes it Dual Rinnegan Juubi Jinchuriki Madara. Madara only used Rinne Sharingan to cast IT and seemed to have no further control over it (and Kaguya's use of it suggests it basically uses entire biju worth of chakra per jutsu so it's not like he could use further abilities like the Spacetime ones).