Prostheses Specialist

Ability Score Increase. Increase your Constitution score by 1, to a maximum of 20.

Built Different. You can attune to one item that requires attunement by a creature missing a body part or replaces a part of a creature's body without it counting toward the maximum number of magic items you can attune to.

Hotfix. Additionally, once per long rest you can attune to or end your attunement to such an item as an action if you've attuned to the item before and unless the item is cursed or prevents you from attuning to or ending your attunement to itself in any other way.