Underworld Trading is one of the four Mission Skills. It involves expertise in the trading of illegal goods and services. Crew missions for Luxury Cloth, Underworld Metals, and companion gifts. Generally Underworld Trading provides materials to make items that are of Prototype (Rare/Blue) or Artifact (Epic/Purple) quality. It is one of the skills that provides the required materials for Synthweaving, Armormech and Cybertech.