Secret Study

4th-level transmutation

Casting Time: 1 bonus action

Range: Touch (30 ft. radius sphere)

Components: V, S

Duration: Until the spell ends

The first time you cast this spell, you touch a door and spend 10 minutes creating your own personal study on a demiplane. The study is a room that is 20 ft. in all dimensions, and inside, the study appears with a desk, shelves, a chair, some storage space, and appears aesthetically how you would like it to appear, but it is otherwise empty and becomes magically linked with the key provided as the material component for this spell.

After casting this spell for the first time, you can cast it again on any door. The key appears out of the pocket dimension and into your hand.

Any creature holding this key can use it to access your secret study. If the door has a keyhole, you can insert your key at the end of the casting time, and enter it into the keyhole. If it doesn’t have a keyhole, a magical keyhole forms directly below the handle that you can insert the key into instead.

The door opens up to your secret study. Anything you place in the study that isn’t a creature remains in the study at the end of the spell’s duration, and all creatures are ejected through the door at the end of the duration and land in the closest open space to the door.

Anytime you leave this demiplane and close the door behind you, the study disappears and the key is placed in a pocket dimension, and the spell ends.