The Great Water Ball Rasengan is a variation of Naruto Uzumaki's Great Ball Rasengan, developed during the fight between Dairiku and childhood rival Azuma. By adding increased amounts of Water chakra to it, he is able to increase the size of the regular Water Rasengan, in turn increasing its power. It deals astounding damage to the area and the target, but it takes a lot out of Dairiku. The difference in the two variations is that the Great Water Ball Rasengan doesn't need a Shadow Clone to form it.