Official Move Approval IV

[Mark]

Adventurer's Bag of Holding (600, requires Mimic)
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A magically enchanted leather bag which has enormous capacity, allowing Malon to store numerous objects without encumbering herself. It looks like a regular leather bag with "teeth" along the opening, and two leather straps to pull it shut. Objects, even those larger than the bag's opening, "disappear" when pushed into it, though the object can be no larger than an average horse. Malon can also not store anything in the bag that she cannot lift with two hands and no creature that is alive, undead, animated, a sentient robot etc. The bag can also not be used to "swallow" enemy attacks, nor can it contain artefacts. It can contain consumables, but only if they belong to Malon.

The bag can also be used for Malon to create and store a "memory" of a move, which is made with Mimic. To do so, when seeing the move that she wants she opens the bag and holds the opening facing upwards with both hands. A marble-sized blue crystal then appears above the bag and drops into it. The process consumes very little stamina but Malon must stand still for at least 3 seconds and use no other moves during that time to be successful.
The crystals created this way do not decay after the 1 hour that a mimicked move usually lasts. When held against a source of light like a handle they project a 3D "hologram" of light which depicts the move that Malon has stored a memory of. This can be a depiction of the item that is the move or a looping animation of her opponent performing the move. They have no in-combat function. Their only use is for Malon to remember specific moves from past encounters, or to show them to other people. Obviously, she cannot Mimic a move off revisiting a memory this way.
Malon can store memories of everything that can be mimicked.

While the first part regarding item storage is totally fine and doesn't require a move, I'm gonna have to deny the mimic part, unfortunately. Omni denied a similar move for Toybox Girl a while back, and though this move isn't identical to that, it accomplished much the same thing.