Dimensional Doorknob

The dimensional doorknob is a must-have addition to the arsenal of any thief that lacks the necessary dexterity to pick locks themselves. In addition, the doorknob's built-in escape magic allows for a quick getaway when things go south. As a guard wanders a museum of precious relics, the bowels of a jail, or the vault of a treasury, they might find only unlocked doors and a momentary glowing purple light as a thief teleports from the scene of its crime.

Skeleton Key: As an action, you can place the doorknob over a keyhole where, for the next minute, it attempts to pick the lock. The dimensional doorknob acts as a set of thieves' tools and automatically unlocks locks with a DC of 15 or lower. For higher difficulty locks, the doorknob has a +7 modifier to its Dexterity (thieves' tools) check.

Dortal: As an action while holding the doorknob, you can cast the dimension door spell. When you do so, a glowing purple portal appears in your space until the start of your next turn. Any creature up to 1 size larger than you can pass through the portal. After you activate this property, you can't do so again until the following dawn.