This article, Giant Sphere, contains content taken directly from our mother site. All credit of such content is reserved the original authors over at Narutopedia, the original article can be read here: "Giant Sphere".
Satori forms a large sphere of red energy from its mouth or feet to fire at its foe. A single hit forced Gamabunta to retreat, and the resulting explosion is larger than the Hōzuki Castle itself. Despite this, the Satori later told Reikon that the sphere it formed at that time was not it's strongest.