Grand Tempest Rasengan

A Rasengan of varying might with a hole at the center of it, akin to the eye of a tornado. This Rasengan is designed to absorb chakra, making itself stronger while protecting the user from attacks within reach with wind tendrils that exude from it. After a single use, the Rasengan's hole seals, forcing the user to create a new Grand Tempest Rasengan in its place if they wish to absorb a new chakra.