Flame Engine
Direct damage attacks have a 50% chance to trigger Flame Engine, which finishes the cooldown on Searing Wave, Firestorm or Heavy Flamethrower and causes your next Searing Wave, Firestorm, and Heavy Flamethrower to generate no heat and deal 40% more damage. This effect cannot occur more than once every 15 seconds.
FQN: abl.bounty_hunter.skill.shield_tech.flame_engine