Eternal mangekyo sharingan

The new Sharingan is dubbed the Eternal Mangekyō Sharingan (永遠の万華鏡写輪眼, Eien no Mangekyō Sharingan). After going blind because of the use of the Mangekyō Sharingan, Madara implanted Izuna's eyes into his own body, which then awakened a new "Eternal" Mangekyō Sharingan, a combination of his own and Izuna's Mangekyō Sharingan. With it, Madara never had to fear the risk of losing his eyesight again. As a result, Madara awakened a new more powerful set of eyes which allowed him to see the light once again. This new eye form would combine the look of both he and his brother's Mangekyou Sharingan. It gives the user greater power and gives the user a fourth ability(may also grant the user imortaliy). The Power of the "Eternal" Mangekyo Sharingan also gives the user complete control of the nine-tailed demon fox, although Madara Uchiha is the only one to accomplish this milestone.