Acorn Pin

While wearing the pin, you or one person of my party can turn invisible as an action. Anything you are wearing or carrying is invisible with you. You remain invisible until you or the party member casts a spell, or until you use a bonus action to become visible again.

Given to me after the group I was with tried to murder me. My mentor in the group gave it to me in the middle of the night so I could escape. 

Notes: Advantage: Stealth, Invisible, As level increases, this personal item will level up as well. , Deception, Jewelry