You can leverage a powerful quarantine procedure to keep others safe from dangerous artifacts. As a Magic action, you can create a pocket dimension that is an exact duplicate of your surroundings at the moment you use this featureācomplete with duplicates of all the structures and nonmagical items thereināand transport creatures you choose within its area to the dimension. You decide the exact area of the duplicate dimension, as long as its total space fits within a 150-foot Cube.
While in the pocket dimension, you can only affect and be affected by other creatures in that dimension. You can't see creatures and objects outside the pocket dimension. Objects taken from the pocket dimension vanish upon leaving it.
If a creature leaves the bounds of the pocket dimension it appears in the corresponding space on the plane it left. If it appears in an occupied space, it is shunted to the nearest unoccupied space and takes 4d6 Force damage.
The pocket dimension lasts for 10 minutes, and ends early if you have the Incapacitated condition, the pocket dimension contains no creatures, or you dismiss it (no action required). When the pocket dimension ends, all creatures and objects are returned to the plane they left in their corresponding locations.
Once you use this feature to create a pocket dimension, you can't do so until you finish a Long Rest.