Black Core Essence

material used to convert superior Exodor gear to mythic rarity.

Note horrible mistranslations in item description. It's used for Annihilation and Dark Light gear.

After patch v102 you can buy this item for gold from Fovarth in Muhrak's Workshop and Black Core Nodules are no longer needed. This allows easily convert existing gear to mythic.

Source

 * buy from Fovarth