Deadeye Feat 12
Source Pathfinder Guns & Gears
You relax your eyes, taking in the smallest movements of objects, stirring of grass and leaves, and other signs of the presence of Hidden things, granting you the ability to locate Invisible creatures. Until the start of your next turn, you can see invisible creatures and objects as silhouettes defined by the movement of air, slight depressions in the ground, and other tells that less-keen eyes would overlook, which makes them merely Concealed from you.
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.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
GunslingerThis indicates abilities from the gunslinger class.