Black Fire Phoenix Slayer Magic

Black Fire Phoenix Slayer Magic (黒火災の滅鳳凰魔法, Burakku Kasai no Metsuhōō Mahō): is a Caster Magic and a Lost Magic that uses the darkest of fire magic. Making it one of the strongest style of Phoenix Slayer Magic used by 'Azra'il Ishvarion, a first gen phoenix slayer,and taught to him by Devvaux.

Description
Black Fire Phoenix Slayer Magic is a type of Phoenix Slayer Magic that allows its user to transform the physiology of their body, and gain the various characteristics, typical of a Black Fire Phoenix.

Consequently, this Magic allows the user to both produce and control black fire from any part of their body, which can be used in both close and ranged combat to a great extent. A trait of the Black Fire Phoenix slayer magic that allows its user to do, is consume regular fire, and shadow infused fire, to replenish their health or magic. However, they strictly can not eat their own magic. The generated black fire can be manipulated in a wide variety of ways, their “type” can be changed at will, and they can even be given a material consistency.

Basic Spells
Black Fire Rise (黒火災雄凰燃力演, Burakku Kasai Raizu): It's where the user's magical energy is fused with their bloodstream and the adrenaline they're experiencing during combat. This in turn reacts with their own body and magical energy, increasing the Strength, Speed, and potential they possesses tenfold. Users enter a state of enhanced awareness and peak physical ability. While in this state, a Salt Dragon Slayer demonstrates heightened reflexes as it amplifies their salt dragon slayer magic without exhausting themselves. Visually, this causes a large amount of white energy to emit from all parts of their body.

Black Fire Phoenix's Healing Spell: Much like its similar god and draconic counterpart, the Black Fire Slayer isn't merely an attacker, but also a healer thanks to a phoenix's regenerative abilities: through the use of his Magic, 'Azrá'il is capable of almost immediately restoring any injury inflicted upon him, making it disappear harmlessly. Such a remarkable ability makes him tricky to defeat, considering that, if the opponent doesn't manage to strike him down in a single blow, 'Azrá'il can heal himself and continue battling as if nothing happened. This skill can also be applied to others, as shown from 'Azrá'il healing Saiyoto's wounds after the latter's battle, doing so through a halo of warm black fire generated around his open palms. The fact that 'Azrá'il couldn't completely heal Luminos after the latter was brutalized and had his regenerative abilities taken away, however, hints at certain limitations on the Phoenix Slayer's powers. It should be noted that, while seemingly more effective than the similar spell used by the Sky Dragon Slayer, this move can also restore 'Azrá'il's fatigue and stamina, although not very quickly. (Unnamed)