Displaced Room

4th-level conjuration

Casting Time:10 minutes

Range:10 feet

Components:V, S, M (a platinum key worth at least 100 gp)

Duration:4 hours

Classes: Wizard

A door no larger than 2 feet taller or wider than you appears on a surface that you choose within range.

The door is initially locked by magic and can only be unlocked by using the key used as the material component for this spell.

The door leads to an extra dimensional space in the form of a plain stone room that is a 20-foot cube. If you or anyone else casts this spell again using the same key, the door leads to the same room. However, if a different key is used as the material component, the doorway leads to a new room when the door is unlocked. You can carry several keys that can each be used to open a door to a different room.

The room lasts for the duration and the spell ends early if you lock the door from the outside. The room can be used to store objects indefinitely, but any creatures left inside when the spell ends are expelled to unoccupied spaces nearest to where the door appeared.

If you lock the door from the inside, anyone can attempt to open the door as normal, using your spell save DC as the DC for any ability check the Gm calls for in the attempt.