Location: Dream Nexus
Price: N/A (Dropped by Khasaanda (Monster) (1))
Sellback: 250 Gold
Rarity: Legendary Item Rarity
Description: Unknown, powerful, hidden… the qualities of every good shadowlurker… Take upon your head this vestige of shadow and relive the ways of the hidden side of Chaos.
Note: Also see Mask of the Hidden.
Thanks to AsukaAQW.