Blood Geist: Blood Serpent

Utilizing a large quantity of blood, the Yosoi forms a truly colossal hydra surrounded by many smaller hydra. This snake is the size of a fully formed Kurama and boasts extreme defensive, offensive and regenerative capabilities. If the main hydra head is cut off, it simply regenerates, but if the head of a smaller hydra is cut off, two more regenerate in its place. While it bites a target, it releases vaporized blood capable of corroding targets and chakra. Upon biting a target, it can inject them with a liquid version of this steam, while spreads throughout the target, corroding them from within, or can inject them with boiling blood that causes the target's body to swell and explode. At any point in time, Yosoi is able to alter the properties of the blood itself to induce unique effects and even change the size and shape of the hydras.