Cobble Dancer Feat 13
Source Pathfinder Lost Omens: Character Guide
You know how to take advantage of foes thrown off-balance by unstable flooring, loose cobblestones, or similar impediments. While in an outdoor urban environment, you can Step into difficult terrain and enemies in difficult terrain are flat-footed to 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.
HalflingA creature with this trait is a member of the halfling ancestry. These small people are friendly wanderers considered to be lucky. An ability with this trait can be used or selected only by halflings. A weapon with this trait is created and used by halflings.