pf2e.fyi
From Pathfinder Society Scenario #3-06: Struck by Shadows, which isn't enabled.

Fetchling Sneak

CREATURE 1
Perception +8; darkvision
Languages Common, Necril, Sakvroth, Shadowtongue
Skills Acrobatics +7, Athletics +4, Deception +4, Diplomacy +4, Intimidation +4, Occultism +5, Shadow Plane Lore +5, Society +5, Stealth +7, Survival +4, Thievery +7
Str +1, Dex +4, Con +0, Int +2, Wis +1, Cha +1

AC 16; Fort +5, Ref +10, Will +6
HP 20

Speed 25 feet
Melee Shortsword +7 (agile, finesse, versatile s), Damage 1d6+1 piercing
Melee Dagger +7 (agile, finesse, versatile s), Damage 1d4+1 piercing
Melee Dagger +7 (agile, finesse, thrown 10, versatile s), Damage 1d4+1 piercing
Shadow Slink
Requirements The fetchling sneak is in an area of dim light or darkness

Effect The fetchling sneak sticks to the shadows as it moves to ambush an enemy. The fetchling sneak Strides up to half their Speed and makes a Strike. The sneak's target is Off-Guard against this attack. The fetchling sneak can choose to Stride up to their full speed, but doing causes the sneak to take a -2 penalty to their Strike.
Sneak Attack

The fetchling sneak deals an extra 1d6 precision damage to Off-Guard creatures.

Pathfinder Society Scenario #3-06: Struck by ShadowsOGL