Bag of Molding

At first glance, it appears to be a standard Bag of Holding, but with beads of condensation always on the outside. The Identify spell will only recognize this as a Bag of Holding but with flaws or defects. Similar to a Bag of Holding, any items placed inside are transported to and held in another plane, but instead of an extradimensional pocket dimension, any items placed in this bag are transported to specific coordinates within the Elemental Plane of Water.

Any items placed within the bag will interact with fresh water, which may prove destructive on anything sensitive to water (like ink and paper), but most items will be able to be retrieved easily without harm, just wet. Retrieving an item from the bag requires an action.

If the bag is overloaded, pierced, or torn, it ruptures and is destroyed, and its contents are scattered across the Elemental Plane of Water while 1d6 gallons of water are released into the space that previously held the bag.

If the bag is turned inside out, all items contained in the bag will spill forth, along with 30 gallons of water that rushes forth in a geyser 30 feet long and 1 foot wide. If this geyser is directed towards a creature within 30 feet, the target must succeed on a DC 13 Strength saving throw or take 1d4 bludgeoning damage and be knocked prone. The bag must be put right before it can be used again. 

Placing a bag of molding inside an extradimensional space created by a handy haversack, portable hole, or similar item has no destructive effect, as the result would simply be the creation of a portal to the Elemental Plane of Water from the extradimensional space.

Notes: Utility, Container