Blaze Release

is an advanced chakra nature kekkei genkai of the Uchiha clan, that lets them manipulate black flames. Sasuke Uchiha uses this technique when manipulating the unquenchable black flames of Amaterasu, fashioning them into various weapons and defences. C states that Sasuke manipulates the flames with his right Mangekyō Sharingan whereas he casts Amaterasu with his left. It is unknown what element(s) this nature entails aside from Fire Release which makes up Amaterasu.