You gain pyrokinesis focused around cinders and ash and the ability to summon cinders and ash, along with near immunity to heat and fire. The cinders and ash you can summon can melt steel within moments of contact, and alongside this, you have the ability to transform your body into a living mass of superheated ash and cinders. In this state, you cannot be hurt except by the destruction of the burning core, which is normally located inside your head, but with training and experience, you can learn to move it around your body to protect it from damage.
You can also create constructs that are strong as steel out of your ash and cinders, and you can heal yourself from anything using ash and cinders that you did not create so long as your brain remains fully intact.