This bag looks and functions exactly like a normal Bag of Holding, with double the interior capacity of up to 1000 pounds and 128 cubic feet. This capacity comes at a cost, as Bagustus the Bag of Overhelpfulness feels the need to assist in stressful situations. The bag must be reassured of its value and importance in order to open up to release any item contained inside.
Whenever the bearer of Bagustus is in a challenging situation, (A situation requiring a skill check with some significant possible ramifications for failure), Bagustus may, Telepathically, flood the bearer with 'helpful' advice. The Bearer must make a Wisdom Saving Throw with a DC of 14 (+/- up to 4 at DM's discretion, based on the riskiness of the endeavor.) If the save succeeds, the advice was actually helpful and the Bearer adds +1d4 to their roll. If the save fails, the advice is horrible, and they subtract 1d4 from their roll.
If the bag is overloaded, pierced, or torn, it ruptures and 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. Breathing creatures inside the bag can survive up to a number of minutes equal to 20 divided by the number of creatures (minimum 1 minute), after which time they begin to suffocate.
Placing a Bag of Overhelpfulness inside an extradimensional space created by a 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 10 feet of the gate is sucked through it to a random location on the Astral Plane. The gate then closes. The gate is one-way only and can’t be reopened.
[See Also, Bagamemnon, Bagatha, Bagnar, & Bagness for the rest of the Sentient defective Bag of Holding family]
Notes: Utility, Container
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