The Veilstone Amulet was crafted by Eldrin Altharion, the Dark Scholar of the Empire. It is a powerful relic with illusion and concealment magic, allowing Nalthor to pass as a construct, hiding his demonic aura and true form as an Umbrafiend. The amulet acts as a disguise and protection, making him appear as an inanimate construct to magical detection. It is crucial for Nalthor to move undetected and unchallenged within the Empire.