I'm trying to set up my character and I'm new to this. My DM is on vacation, so I'm trying to get it set up and ready, How do I set up the Breath Weapon as an attack? <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 Draconic ancestry. 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