Nine-Tails Rasengan

Rasengan of the Nine-Tails is a variant of the basic Rasengan in which the chakra of the tailed beast is used. While in the first-level jinchūriki cloak form, the user creates a Rasengan to which the powerful chakra of the Bijuu is also added. Apparently, the cloak helps to hold the chakra together, since Naruto himself, previously unable to create a Rasengan without the help of his shadow clone, creates it with just one hand. Due to the influence of the beast, the color of the Rasengan comes out darker than usual and it possesses noticeably greater power, capable of withstanding a Chidori strengthened by the Cursed Seal.