Every thousand years, a God Tree produces a chakra fruit, which human legend holds is never to be touched. these fruits are immensely powerful, producing medicine that grants them godlike power along with extended youth and longevity. Upon consumption, you gain a monstrous chakra reserve equal to the shinju and a powerful dojutsu - the Rinnesharingan. With all the powers of the Rinnegan and Sharingan. Two bloodline limits also appear. Kaguya had Ash Bones, able to instantly turn anything they hit into dust. And the byakugan.