Specifics: At third and seventh level, the dragon disciple begins to develop his ancestor's signature ability: a fiery breath weapon. While the damage potential of the breath weapon slowly raises until reaching its full potential on level ten, save DC (19) and area of effect (30' cone) stay the same.
Damage is rolled once for all non-friendly creatures in the cone.
Though the cone will extend 10 meters from the user, he will attempt to approach within touch distance of a selected target object.
This feat's description is only accurate for pre-epic levels. In epic class levels, the damage continues to increases (by 1d10 for every 3 levels), while the save DC does not remain the same but increases by 1 for every 4 levels beyond 10.