Blaze Release

is an advanced chakra nature kekkei genkai known to have been employed by at least two members of the Uchiha clan, that produces black flames. Sasuke has gone as far as to add shape transformation to the black flames, fashioning them into various weapons and defences. Besides being cast by means of Amaterasu, Sasuke can create this chakra nature with his Susanoo as well and even in his own palm.

C stated that Sasuke manipulates the flames with his right Mangekyō Sharingan whereas he casts Amaterasu with his left.