Cold Breath

When using this a 15 ft cone of freezing air burst forth dealing cold damage to every creature within range. Based off the dragonborn breath ability. 

The DC for this saving throw equals 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. The damage increases to 3d6 at 6th level, 4d6 at 11th level, and 5d6 at 16th level. You can’t use it again until you complete a  long rest.