Arcane Dragonblood Feat 1
Source Pathfinder Player Core 2
You descend from a dragon that wields mastery of their magical abilities, such as a fortune dragon or mirage dragon. As such, you can instinctively grasp the intricacies of magic. You gain the trained proficiency rank in Arcana. If you would automatically become trained in Arcana (from your background or class, for example), you instead become trained in a skill of your choice. You gain the Arcane Sense skill feat. If you choose a draconic exemplar, you must choose an arcane dragon.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
DragonbloodA creature with this trait has the dragonblood versatile heritage. These creatures are born of draconic lineage and often have draconic appearances.
LineageA feat with this trait indicates a character's descendance from a particular type of creature. You can have only one lineage feat. You can select a lineage feat only at 1st level, and you can't retrain into or out of these feats.