Sage Art: Ultra-Big Ball Rasengan(Zerefblack1)

The Sage Art: Ultra-Big Ball Rasengan is a gigantic Rasengan created by Naruto Uzumaki, enhanced with sage chakra. Although its destructive effects have not been seen, it was used to distract Kurama. Presumably, it is as strong as Jiraiya's version which was said to be able to hollow out a mountain if it exploded.

Variations
Sageru's version of this technique is about twice bigger and stronger than Naruto's,he used it to stop Chomei from using tailed beast ball during his training with kajo,though its destructive power wasn't seen but it was strong enough to counter chomei's tailed beast ball until chomei got angry and fired the ball with full power.