From Pathfinder Lost Omens Hellfire Dispatches, which isn't enabled.

Unbalancing Appearance

FEAT 6

Activity 1 action

Requirements A creature within your reach is Off-Guard to you, and you are Unnoticed by that creature.

When you attack from the shadows, your foes are thrown off balance. Make a melee Strike against the creature. If your Strike hits, the target remains Off-Guard for the rest of your turn and is Clumsy 1 (Clumsy 2 on a critical hit) until the beginning of your next turn.

Pathfinder Lost Omens Hellfire DispatchesORC