X

 is an item used to craft the Synthesizer v1.

Obtaining
X can be obtained by using an Atominizer on an Exe. Exes naturally spawn in the.

Synthesizer v3
Up to 30 X can be placed in the Synthesizer v1 to gain per item.

Synthesizer v2
Up to 30 X can be placed in the Synthesizer v2 to gain per item.

Synthesizer v3
Up to 40 X can be placed in the Synthesizer v3 to gain per item.

Essence Crafting
X can be used to add Stars to Shimmering Light Armor.