At first glance, this weathered leather backpack appears to be nothing more than a well-used adventurer's pack. Its stitching, buckles, and contents all seem entirely mundane. Unknown to most, the interior has been enchanted to exist within a magically veiled space.
Items placed inside the backpack cannot be detected by magical or mundane means while the bag is closed.
The contents are hidden from effects such as:
Spells that locate or identify objects, Divination magic targeting the contents, Magical senses that detect magic or enchanted items, X-ray-like magical vision or similar supernatural sight, Physical inspection that does not involve opening the bag, The contents are still subject to normal extradimensional restrictions (such as interactions with similar magical containers)
While the bag is closed, it is indistinguishable from an ordinary backpack.
A creature examining the bag must succeed on a DC 18 Intelligence (Arcana) check to recognize that it is magical.
Spells that identify magical items, such as Identify, automatically reveal the bag's properties once cast upon it.
The bag weighs 5 pounds, regardless of its contents. Retrieving an item from the bag requires a Utilize action.
If the bag is overloaded, pierced, or torn, it is destroyed, and its contents are scattered in the Astral Plane. If the bag is turned inside out, its contents spill forth unharmed, but the bag must be put right before it can be used again.
Placing a Bag of Concealed Holding inside an extradimensional space created by a Heward’s Handy Haversack, Portable Hole, or similar item instantly destroys both items and opens a gate to the Astral Plane. The gate originates where the one item was placed inside the other. Any creature within a 10-foot-radius Sphere centered on the gate is sucked through it to a random location on the Astral Plane. The gate then closes. The gate is one-way and can’t be reopened.
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