Nightmare Visage

{p/u} This mask can only be attuned to by a Warlock of the Shadowcat Patron. You gain an additional Eldritch Invocation while attuned to this mask. Additionally, once per day you may ender the Border Ethereal as an action, and gain 60 feet of Fly speed whilst within it. By spending ten minutes in the Border Ethereal performing a ritual over a sleeping humanoid, you may devour their nightmares. For each nightmare consumed, you do not age for an additional 1d4 years.
"My child, this is my final gift t