The infernal can wreathe his body in an unnatural black flame, which protects him from his enemies while searing their flesh.
Prerequisites: Infernal, base attack bonus +5, Con 14.
Benefit: Once per day, the infernal can ignite his body for a number of rounds equal to his level. This ability does not harm his armor, weapons, or gear. Anyone striking the infernal takes 1d4 points of fire damage; anyone grappling him—or grappled by him—takes 4d4 points of fire damage.