Bag of Holding

This bag has an interior space considerably larger than its outside dimensions. The bag can hold up to 500 lbs, not exceeding a volume of 64 cubic feet. It weighs 15 pounds, regardless of its contents.
Breathing creatures inside the bag can survive up to a number of minutes equal to 10 divided by the number of creatures (minimum 1 minute), after which time they begin to suffocate.
Placing a bag of holding inside an extradimensional space destroys both opening a gate to the Astral Plane sucks in creature