Board Thread:Naruto Discussions/@comment-3568954-20140809171212/@comment-5407586-20140809202513

The trouble with creating an elemental Rasengan is that the base Rasengan already requires extreme concentration, so unless one splits the roles of Shape and Nature Transformations between clones (or chakra arms or external assistance, as Naruto does with the tailed beasts), elemental Rasengan is a no-no. The Kirin-Rasenshuriken combo would be unlikely to work on Kaguya, since she herself has complete control over nature (as the incomplete Ten-Tails she could even cast this which definitely surpasses the Kirin-Rasenshuriken combo).