Combat Thievery A5E

You know how to trade blows for more than inflicting harm.

You gain proficiency with the Deceptive Stance and Painful Pickpocket maneuvers, and do not have to spend exertion to activate them.
You gain an expertise die on Sleight of Hand checks.

Source: Adventurer's Guide (EN Publishing) · License: Creative Commons Attribution 4.0 / OPEN GAME LICENSE Version 1.0a details