YGGDRASIL Creator Kit

YGGDRASIL Creator Kit (クリエイトツール) are a variety of tools that could change the function of items.

Description
An item that could apparently customize items in several ways. A player can utilize the various creator tools (sold separately) in a way where they fully customize their armor, weaponry, flavor text, appearance, and other cosmetic settings like their in-game residence.

For example, in the Web Novel, say a player killed a dragon. Money and experience drop as per normal DMMO-RPGs. However, this is different. The dropping of money and experience does not change. Rather, in place of items, data crystals are the ones dropped instead.

Appearance
No information on its appearance was given.

Abilities
An example of the YGGDRASIL Creator Kit, was that it could modify the functions of a Divine Item, such as the Ring of Ainz Ooal Gown. According to Ainz, he could easily mute audible items like Bukubukuchagama's Wristwatch with the use of YGGDRASIL creator tools.

On the other hand, let's say the creator tools was used to manipulate this type of data: Length: +1, Weight: 40, Physical Damage increased by 5%, Special Effect: Additional Damage/Fire+10, Special Effect: [Martial Arts] Rush+1

Although there are actually more details in that data, you already have the general picture. You could tinker with this data by using the YGGDRASIL creator tools and make original items.

Another example would be where you could make a Golem out of Dragon Bones due to the data. By playing around with this data with the creator tools, you could create your own Golem.

Trivia

 * Neither Ainz Ooal Gown nor the Great Tomb of Nazarick’s inventory had any.
 * Magic in YGGDRASIL had a ridiculously large number of 3000 tier spells that could not be changed or made by the creator tools.
 * One would need developer tools to change an NPC’s backstory.