You have an unnatural level of attunement to Veilglass, and you have advantage on Wisdom and Intelligence checks related to locating, understanding or utilising the material.
Pierce the Veil. Prolonged exposure to the material has an impact on your mental acuity. While you are within 30 feet of raw, unrefined Veilglass you have disadvantage on Concentration checks made to maintain your spells, and any Insight or Perception checks are made with disadvantage.