Greater Breath Weapon

Your draconic powers grow, enabling you to push your breath weapon beyond its previous limits. You gain the following benefits:

• Increase your Strength, Constitution, or Charisma by 1, to a maximum of 20.
• You regain the use of your breath weapon after 1 minute.
• When you use your breath weapon, you can spend one Hit Die to deal an additional 2d6 damage of your breath weapon's type. You cannot spend multiple Hit Dice on a single use of your breath weapon.