Kakashi Enlightened!

is the 29th episode of the Naruto: Shippūden anime.

Synopsis
Kakashi reveals his Mangekyō Sharingan, and uses his interdimensional warping technique, Kamui, to try and take out Deidara's head, but succeeds only in warping his arm. While Deidara has his guard down, Naruto manages to separate him from his clay bird, and has his clones take away Gaara's body from the bird's mouth. Naruto attacks Deidara, only to discover that he is beating up a clay clone. Angered, Naruto's Nine-Tailed Fox chakra begins to emerge, leading Naruto to transform to his two-tailed form.