 As an action, your dragon can expend 0 points, expelling elemental energy. The nature of the breath weapon varies by dragon type, and the exact details of the ability are detailed in each dragon's stat block. Regardless of the type, however, a successful saving throw reduces the damage by half.  As an action, your dragon can expend 0 points, expelling elemental energy. The nature of the breath weapon varies by dragon type, and the exact details of the ability are detailed in each dragon's stat block. Regardless of the type, however, a successful saving throw reduces the damage by half. 