Living Armament

At the end of a Long Rest, you can touch one nonmagical weapon and fuse it with your flesh. The weapon becomes a living weapon until your next Long Rest. You can have only one living weapon at a time. The weapon counts as organic as well as metal or wood. You can disarm the weapon by spending 1 minute separating it from your flesh. It may twitch, breathe, pulse, blink, or softly react to danger, but it remains under your control.

While wielding this weapon, you cannot be disarmed of the weapon. In addition, you gain a unique ability from this fusion. Work with your DM to create the specifics of this effect based on your character's abilities and the weapon's properties.