Flame God Slayer Magic

Flame God Slayer Magic (火炎の滅神魔法 Kaen no Metsujin Maho) is a Caster Magic, Lost Magic, and a type of God Slayer Magic. The only known user of this magic is Zancrow, a member of the Seven Kin Of Purgatory.

Description
Flame God Slayer Magic incorporates the element of fire into the user's body. This allows the user to produce black flames from any part of his body. The user is also able to consume flames of any sort to replenish his/her strength. Zancrow says that his flames, in addition to being able to burn, are "flare halberds that destroy everything," which implies that his flames have a high amount of destructive ability.