From Pathfinder Lost Omens Shining Kingdoms, which isn't enabled.

Stunning Surprise

FEAT 14

Activity 2 actions

Requirements You must be undetected by the target creature.

You quickly move in to bring your foe down with a single blow. You move up to your Speed then make a melee Strike. If you hit and deal damage, your foe must attempt a Fortitude save against your class DC or spell DC, whichever is higher. Regardless of the save outcome, the creature then becomes immune to your Stunning Surprise for 24 hours.

Critical Success The creature is unaffected.

Success The creature is Stunned 1 and can't use reactions until its next turn.

Failure The creature is Stunned 3 and can't use reactions until its next turn.

Critical Failure The creature falls Unconscious for 1 minute.

Pathfinder Lost Omens Shining KingdomsORC