Fencing Master

You handle a Rapier as easily as you breathe. Your mastery of the weapon allows you to rely on it as your sole offense and defense. While wielding a Rapier with no armor, no shield and no other weapon equipped, you gain the following benefits:

- You gain double your proficiency bonus in attacks made with the Rapier.

- You gain double your DEX modifier to damage rolls with it. 

- Your AC bonus from Dexterity is doubled.