Adding another layer to the game.
I'll use a Malignus idea example,
Malignus could drop a
[Lv 7 Security Card] as an ultra rare drop. Seems uselss, might have a [wear] action or a [Use] action.
If you have the card, and go inside a self storage facility searching. You can find
[Cat Crate] which uses up the Security Card.
[Cat Crate] has a one time [Use] feature or can be traded.
[Cat Crate] turns into
[The WhatWalker], an annoying NPC boss with [

loots]
Boss: The Whatwalker
Designation: Machine
Storage Contact: Cat Crate
Number in Storage: 1
Description:
The “Whatwalker” is a tripodal item of unknown type. Surface is a pale green with black mottling. A single sphere of what appears to be mother-of-pearl sits on a fleshy cushion at the uppermost point of the “limbs”. Each “limb” ends in a self-adhesive two-pronged “foot”.
Item is ambulatory and appears to be self-motivated. It seems to detect conversations between two or more human subjects, and will approach said speakers quickly and silently. Immediately upon reaching the area of conversation, the item will sharply demand “WHAT?” in an off-putting, shrill voice.
No other activity has been observed.
No power source has been located at the time of this report.
Further Notes: We're keeping it in a cat crate. Please let us know if Dr. Malignus plans to produce anything similar in the future… and if so, why.