Advanced Prosthetic: Mobility Boosters

This item replaces a lost limb. While the prosthetic is attached, it functions identically to the part it replaces and allows you to take cast the Expeditious Retreat spell at will, without using a spell slot. You can detach or reattach it as an action, and it can’t be removed against your will. It detaches if you die.

*This item was created to help manage a class feature for the Artificer homebrew subclass: Prosthetic Expert.  If you wish to use this as a normal magic item your DM may wish to have Attunement Required.