Draconic Resistance Feat 1
Source Pathfinder Player Core 2
Draconic magic safeguards you against harm. You gain resistance equal to half your level (minimum 1) to the damage type associated with your draconic exemplar. Double this resistance against damage of that type dealt to you by dragons.
If your draconic exemplar is associated with bludgeoning, piercing, or slashing damage, instead of gaining resistance to that type you can choose acid, cold, fire, electricity, or sonic.
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.