Dark Release: Rasengan

Description
The user uses shape and nature transformation to create a Rasengan embued with the Chakra absorbing properties of the Dark Release. Once an opponent is struck with this technique the chakra absorption will begin and rasengan will use the accumulated chakra to sustain it's form. Due to it continuously maintaining its form, it will continue to attack the target, which takes its chakra, which maintains its form, which allows it to keep attacking endlessly.