Slink Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
You can move through gloom with the speed of darkness. You can move 5 feet farther when you take the Sneak action, up to your Speed. In addition, as long as you continue to use Sneak actions and succeed at your Stealth check, you don't become Observed if you end a Sneak action in dim light or darkness, as long as you have cover or greater cover or are Concealed at the end of your turn.
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.
FetchlingA creature with this trait is a member of the fetchling ancestry. Fetchlings were once human, but generations of life on the Shadow Plane have transformed them.