Xerxes' Crown of Shadows

{p/r} Whilst attuned to this circlet, you make Dexterity (Stealth) checks at advantage. You also gain an Eldritch Invocation. The following spells are added to your spell list and count as Warlock spells for you.
• Crown of Madness
• Dancing Shadows
As the cold stygian steel graced your head, you felt it fill you. The power, not of the stars, but of the void between. With this, the world could be yours.