Chidori Sharp Spear

The original Chidori gained its power by shaping it into a form sufficient for an electrical discharge and using it together with the user's own "thrust". This technique uses shape transformation to form the original Chidori into a spear or blade-shape, adapting it for mid-range attacks with a maximum range of about five metres.Naruto chapter 358, page 5 Its increased range means there is less of a risk to the user. It also has the advantage of being able to be used for surprise attacks and capturing. 
When the enemy's body is pierced, the user can alter the spear's shape into multiple additional blades, increasing the number of wounds.Naruto chapter 367, page 5 The blade can also be swung in order to cut things as well as cause fatal injuries. Sasuke has shown that he can also channel this technique through his chokutō.Naruto chapter 634, pages 8-9 
Because of Sasuke's mastery in kenjutsu, this technique can act as a makeshift sword if he loses his sword.
After infusing this technique with Six Paths Chakra, Sasuke was able to bisect through the revived Madara in his jinchūriki form.Naruto chapter 674, page 15
== Trivia ==
* In the anime, this technique was shown off-screen before its proper début.Naruto: Shippūden episode 89
== References ==
es:Chidori Eisō
pl:Chidori Eisō
pt-br:Lança de Chidori