rofl "you are not weaker than any of them" "sage art" how can this be a prediction ? it's fanfiction, this is how things will go
madara's rod hit's the kunai
madara's upper half levitates around and takes obito's eye while completely ignoring sakura because she's harmless
madara leaves kamui...
if it is aimed at sakura she will still be able to stab the rinnegan, since it won't kill her instantly, that is why the rod is obviously aimed at the kunai
it appears to be:
-a teleportation technique that allows him to instantly move objects and himself within a limited distance
or
-ability to "freeze" time and space for a short interval within a limited area, allowing him to do things in that interval which would appear instant to everyone...