Bag of Shared Holding

This bag doesn't hold anything itself. Instead its space is linked to a Master Bag of Shared Holding. While within 150 feet of the master bag, this bag contains the same stuff as the master bag. While outside of the master bag's range, the bag can not be opened. 

Multiple bags can be linked to the same master bag. A creature that is reaching into the bag while it also leaves the radius of the master bag takes 1d4 force damage and is shunted out of the bag as it closes.

Notes: Container