Breath Weapon: Fire

You can use your action to exhale destructive fire
in a 15 ft. cone. When you use your breath
weapon, all creatures in the area must make a Dexterity saving throw. The DC of this
saving throw is 8 + your Constitution modifier +
your proficiency bonus. A creature takes 2d6
damage on a failed save, and half as much
damage on a successful one.