Dragonsong

Through intense conditioning, you gain an additional use of your Breath Weapon per rest.

Additionally you learn to sing the way a True Dragon does through their resonant horns, turning your voice into a loud and visceral bass.

You can amplify your voice as if with the Thaumaturgy cantrip at will, and can use this feature once per long rest to cast either Shatter or Unearthly Chorus. If you cast Unearthly Chorus with this feature, its radius is increased by 15 feet, and it can be heard as far as 150 feet away. Constitution is your spellcasting ability for these spells.