You can engulf yourself in flame in flight as a bonus action (does not hurt you) and any creature you come into contact with  while on fire takes 1d6+3  fire damage, or if you move down 30 ft. during that turn, they take (1d4+3 fire damage) + (3d4 bludgeoning damage + your strength modifier). Additionally, you have the hover option while on fire, and can choose to remain stationary in the air until you decide to move or take damage. The flame flight is deactivated when you deactivate it as a bonus action, touch   down onto the ground, or take damage equal to half your hit points in one turn. This affect also ends if you are incapacitated, or if you continue with it for a duration of minutes equal to your level plus your con modifier. You have one use, which is regained after a long rest.