A Symbol That Strikes Fear
Synergy Feat
Prerequisite
All vigilantes eventually become symbols, and you are a legend that strikes fear into the hearts of those that would stand against you. Creatures with a CR lower than your alter ego’s Prestige rating are frightened of you while you are in your alter ego.
In addition, you become particularly adept at subduing your enemies rather than outright killing them. Whenever you begin a turn grappling a creature, you can attempt to non-lethally subdue it. The grappled creature makes a Constitution saving throw against your maneuver DC. On a failed saving throw, a creature is knocked unconsciousfor the next hour. A creature with more than 25% of its maximum hit points automatically succeeds on this saving throw.
Source