Wondrous Item, Legendary (Requires Attunement)
A diadem of grown bone and cultured gold, passed among the relic-lords who have continued for centuries. To wear it is to be recognized, at once, as one of the Court — for good and ill.
The Undying Brow. While you wear the crown, you don't age, and you don't need to eat, drink, or breathe.
Voice of the Court. You can cast command at will from the crown (save DC 17). It has 4 charges, and you can expend charges to cast mass suggestion (3 charges) or dominate person (2 charges) from it, regaining all charges when you finish a Long Rest.
Marked as Continued. While attuned, you cannot conceal by mundane means that you have been continued: the Deep knows its own, and so, uneasily, do those who meet you.
Source: Sporebound