The Ability to Hug

You have learned of a skill that only the most learned of sages know, a skill that makes you an asset to entire nations, a skill that could solve any conflict, you have learned.... to hug.

As an action you may hug a target. If the target is hostile and charmed make a charisma check and if they fail they become friendly until you or an ally harm them, if the target is hostile and not charmed it must make a charisma save of be charmed, and if the target is friendly it becomes invulnerable for the rest of your turn.