on one hand, I'm impressed that a tactical strategy has actually worked (even if this was the only time their combination attack managed something, very much like the spirit bomb), and a victory was achieved without turning this into crap.

on the other hand, of course, there's the question of why build up the brothers so much, (unless it was to hint us that Madare has access to another bloodline of the 6sage), and the general problem that this arc doesn't seem to go anywhere soon.

other than that, Ninja magic is kinda buggy for me now, especially when mixed with science fiction super technology. they have ninja mind links that travel super far distance (despite the fact that earlier we have seen them using standard radio communications), super tools that suck out souls, shoot lasers and rebuild themselves. and worst of all, now they have a teleporter. what's stopping them from sending a big ball of bombs (like Konan's 6billion swans) into another village?