Definitely the first time in a while I got the feeling of an "OH #@$&" moment at the end of the chapter. I cannot wait to see what powers the Pains/Jinchuurikis have. I wonder if they are going to be like the original Paths of Pain and each of them have a specific power of the Rinnegan, and if their Sharingans are MS too? That would be pretty wild.
I am curious as to how Madara is using the jinchuurikis' bodies. I didn't see any chakra receivers on/in him or the others, but perhaps I overlooked them? I thought it might be edo tensei, but why would Gaara be amongst them, as his soul is quite intact on the battlefield.