Board Thread:Theories and Speculation/@comment-27717552-20160513151229/@comment-26403664-20160514215440

Doesn't it take a lot of chakra control to consciously add a nature to a rasengan so maybe that's why and his raikiri is the technique he is better at and as more variations on when he had Sharingan but as Hokage we haven't delved in his abilities after losing the Sharingan.