Source: I Made It the Fuck Up

Prerequisite: Charisma 15 or higher

Your very presence is magnetic, and you find that people are intrinsically drawn to you.

When a creature with Intelligence 8 or greater that can see you is required to make a saving throw against an effect or spell of yours that charms them, they do so with disadvantage. You also have advantage on Charisma (Persuasion) checks.