Okay so Obito suddenly became a bad as and knows mokuton techniques?!
Why didn't he kill Kakashi? So we see how they both acquired MS. It seems Rin was a spy after all. Great more flashback next week too, dammit Kishi all this should have been done in the land of Iron. He should have made the big reveal THEN.
Them kakashi would be on a paradox mission, kill the bad guy, who used to be his friend. Well I see now why he vilunteered to take out Sasuke. He has already taken out someone close to him before(because he had to).