Draconic Breath

You can use your bonus action to exhale destructive energy. The color you choose determines the size, shape, and damage type of the exhalation. When you use your breath weapon, each creature in the area of the exhalation must make a saving throw, the type of which is determined by your color chosen. The DC for this saving throw equals 12 + your Constitution modifier + your proficiency bonus. A creature takes 3d8 damage on a failed save, and half as much damage on a successful one.