Sage Art: Ultra-Big Ball Rasengan

The Sage Art: Ulttra-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 the Nine-Tailed Demon Fox. Presumably, it is as strong as Jiraiya's version which was said to be able to hollow out a mountain if it exploded.