Wondrous Item, common (requires attunement)
This hand-sized wooden lockbox has shiny brass bands. There are hinges on the back of the lockbox the lockbox is sealed airtight with no lock or mechanism to open it.
Once attuned, the box will open and lock itself at the will of its owner from any distance as long as the they are the same plane of existence to the box. The box can be opened freely if no one is attuned to it, the box can also be pried open with a DC 25 Strength check. The box has an AC of 20 and 10 hitpoints, if damaged the lockbox regains 1d6 hitpoints per dawn. Once destroyed or pried open, the box no longer has magical properties.
Notes: Utility, Container