Each Dragon Priest's Staff is forged with an infused Dragon's Tooth. The power and ability of the dragon affects how this staff works. The staff has 4 charges. Each charge can be used to expend a usage of the spell Dragon's Breath.
Using an action, the staff expels a 15-foot cone of damage appropriate for the Dragon the tooth was gained from. Each creature in the area must make a Dexterity saving throw, taking 3d6 damage of the chosen type on a failed save, or half as much damage on a successful one.
At dawn, the staff recovers all expended charges.