Dragon Blood, Obscure - Howling
The blood of a Howling Dragon courses through your veins. In addition to standard Dragon Disciple progression, you receive certain specific benefits befitting your Howling Dragon ancestry.
At level 10 in the Dragon Disciple class, you receive total immunity to sonic damage.
At level 3, you gain the ability to breath a 30 foot cone of sonic once per day. This cone will cause 2d10 damage, increasing to 4d10 at level 7, 6d10 at level 10, with further improvements in epic levels.