Six Paths Senjutsu

The Six Paths Senjutsu is a heightened form of senjutsu used by the Ten-Tails' jinchūriki, Hamura and Hagoromo Ōtsutsuki, and those who obtain his power.

Overview
Users receive the same benefits and enhancements as are provided by Sage Mode, along with an improved healing factor and power of flight. They also gain an absolute mastery and comprehension of chakra, being granted knowledge and ability to use all nature transformations. Several Truth-Seeking Balls are also granted, inside of which a user is able to merge any or all of the nature transformations together, with varied amount and combinations of them resulting in a different effect.

Six Paths Sage Mode
The is a state achieved by Naruto when utilising the Six Paths Sage Chakra. In this state, Naruto's physical parameters and sensory capabilities are enhanced. Apart from a lack of pigmentation around his eyes, it looked like his regular Sage Mode. By drawing on the power of the tailed beasts, Naruto enters a second state and dons something similar in appearance to his Kurama Mode cloak. This second state granted Truth-Seeking Balls, further enhanced Naruto's abilities and his Tailed Beast Mode avatar to the point where it was a match for Sasuke's Rinnegan-enhanced Complete Body — Susanoo.

Six Paths Ten-Tails Coffin Seal
The is a sealing technique performed by Madara and Obito on the Ten-Tails in order to become its jinchūriki. After performing the necessary hand seals whilst in close proximity to the Ten-Tails' body, the beast is absorbed into the user's body. It grants both Uchiha multiple Truth-Seeking Balls, and one half each of Hagoromo's shakujō. As the jinchūriki of the Ten-Tails, both gained an immense increase in their physical capabilities, as well as enhanced regenerative powers and durability, and were able to completely overwhelm their powerful adversaries. Both Madara and Obito gained horns on their forehead, and a white kimono. Their skin turned a pale grey, and their hair became white. Generally speaking, they resembled Hagoromo Ōtsutsuki.

Trivia

 * In Naruto Shippūden episode 362, Madara was erroneously shown with the ability to fly before becoming the Ten-Tails' jinchūriki and by extension, obtaining Six Paths Senjutsu. This is because the Fourth Databook, which elaborated Ōnoki's ability to fly was actually part of the Earth Release: Light-Weight Rock Technique was not yet published.