Skulduggery Ring
Ring,
Common
(requires attunement; cost 49 gp)
Crafting Components
A stolen key to a jail cell, treasure chest, or bank box that you did not bother to open.
This unassuming ring’s inner lining is engraved with runes keyed to Urim.
While you are wearing the ring, you can press the ring against a seal and have the bezel of the ring change to match it. As an action, you can extrude from the ring a miniature lockpick that magically adjusts to the size of whatever lock you insert it into. If the lockpick is damaged or broken, a mending spell restores its function, as does submerging the ring in a short-lived alchemical solution worth 10 gp for 1 hour.
You gain an expertise die on any checks made to overcome mundane locks.
Source