Sage Art: Ultra-Big Ball Rasengan

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.