Thread:KusaNin/@comment-37992227-20181231015731/@comment-25156300-20181231023858

Blaze Release is just an advanced Fire Release. There is no Lightning element involved. It is just what Sasuke calls the black Amaterasu fire. Because of this, I would say an non-Uchiha wouldn't be able to acquire the skill.

However, there are ways to get a similar effect. You can make a new ability that does combine fire and lightning, but call it something other than "Blaze". You can also make a hiden ability like the Nara shadow techniques or Yamanaka mind abilities. Just have it manipulate fire in a unique way that regular Fire Release cannot. Keep in mind that this method would not use "Release" in the name.