Six Paths Senjutsu

Six Paths Senjutsu is a special form of senjutsu  used by Hagoromo Ōtsutsuki — the Sage of Six Paths — as well as his younger brother, Hamura. Hagoromo is able to grant Six Paths Senjutsu to others, as he did with his son, Asura. It can also be obtained by becoming the jinchūriki of the Ten-Tails, or by having a portion of chakra from each tailed beast, as taking in the power of the nine tailed beasts is the same as obtaining the power of the Sage of Six Paths himself.

Overview
Six Paths Senjutsu is suggested to have a connection with the pattern that appears on the user's back when it is used, consisting of a Rinnegan-like marking above nine magatama, which resembles the pattern on the back of Hagoromo's robe. The pattern that appeared on Obito Uchiha's back differed slightly from that of other known users, with the Rinnegan-like marking itself being shaped into a magatama.

As a form of senjutsu, this ability grants similar benefits to Sage Mode, though the user's sensing capabilities are increased to a far greater extent, to the point where they can even sense shadows in the invisible world of Limbo. They also gain a complete comprehension of chakra, including the ability to use all five basic nature transformations and make perfect use of Yin–Yang Release, as well as an almost unconscious mastery of the floating ability used by the Sage of Six Paths. When one awakens Six Paths Senjutsu, they also obtain a number of Truth-Seeking Balls.

As the Ten-Tails' jinchūriki, Obito and Madara Uchiha displayed several other unique abilities, though it is unknown if these apply to Six Paths Senjutsu users in general. The two were entirely immune to the effects of ninjutsu, only being vulnerable to senjutsu and taijutsu, though techniques utilising Six Paths Power could also damage them. They also possessed an extraordinary healing factor, capable of fully recovering from attacks that destroyed large portions of their bodies within seconds, with Madara even claiming to be immortal. Though taijutsu is viable, the sheer durability of Six Paths users means only techniques of the highest level have noticeable effect; Madara was merely pushed back by Daytime Tiger without harm. Obito was capable of producing chakra arms from the protrusions on his back, which were powerful enough to tear through the Four Red Yang Formation with ease. Despite not previously possessing the kekkei genkai, Madara was able to use a Storm Release technique, which he accomplished due to having Six Paths Power.

Naruto is able to make use of Six Paths Senjutsu while in his Six Paths Sage Mode, a form which he received from Hagoromo. When Naruto used this mode in conjunction with his chakra cloak during the Fourth Shinobi World War, he wore a unique shroud with the pattern associated with Six Paths Senjutsu on its back. According to Sasuke Uchiha, the Truth-Seeking Balls Naruto used in this form utilised what he called, which allowed them to damage Madara's shadow.

Trivia

 * In a single panel in chapter 656, the back of Hagoromo's robe is depicted with the same pattern found on Obito's back, rather than the usual pattern.
 * In Naruto: Shinobi Collection Shippū Ranbu, the cloaks worn by Hagoromo, Hamura, Madara (as the Ten-Tails' jinchūriki) and Naruto (in Six Paths Sage Mode) are known as.