Data Crystal

Data Crystals are item drops that are produced from the slain bodies of monsters in YGGDRASIL.

Background
One of the fundamental building blocks in YGGDRASIL, these crystals are what make the flexible system of customization in YGGDRASIL possible. Data crystals can be used in customization for all facets of the game, ranging from changing the qualities of locations, crafting NPCs, designing personal weapons, altering players appearances, etc. However harvesting data crystals is difficult as they do not come in the same quality as they always do.

Mechanics
The possibly uses of data crystals can be considered endless. For example, upgrading a player's standard gear to Divine Class. However in order for crafting Divine Class items certain materials are necessary. YGGDRASIL magic items are created from these embedded computer data crystals, however since the performance of computer data crystals dropped by monsters is uneven, the manufacture of Divine class items makes it necessary to have several “extremely rare loot” computer data crystals for it to be possible. In order to elaborate, if a player wanted these computer data crystals to be embedded into a container—— such as a sword-type weapon——it had to be a weapon forged from ultra-rare metal for it to be possible.

Trivia

 * Data Crystals in the Great Tomb of Nazarick are seal somewhere in the Treasury.