Background
Dragonborn - Pure Lineage
Your lineage is someway more pure than that of other Dragonborns, and your senses prove it. How you rationalize this is dependent on how you believe the dragonborn race came to be. It could be that during the creation of the dragonborn, Io affixed an astral spirit to your family's line which explains it all. You may hold that you are a direct descendant of those born from the spilled blood of Io at the Dawn War. Perhaps you believe your heritage is a few generations more recent than most, and flows with more of Io's blood.
As with any other background, you may choose one background benefit from the following:
Associated Trait: Low-light vision
Associated Skill: Perception (gain a +2 to perception or add Perception to your class skills)