While attuned to this mask, you are granted the effects of the Epic Boon, Boon of Immortality. 

You can  also speak telepathically to any creature you can see within 60 feet of you. Your telepathic utterances are in a language you know, and the creature understands you only if it knows that language. The utterances are also made as if spoken by a raven using its mimicry trait. Your communication doesn't give the creature the ability to respond to you telepathically.

Boon of Immortality

You stop aging. You are immune to any effect that would age you, and you can't die from old age.

A mask worn by the coven of hags in the Forest of Dolls. Each mask bears a unique Great Rune that glows an ever shifting green and red. The runes are found in the eyes and a third that magically forms on the back of the head.  The specific Great Rune on this mask is astrology inspired. It bears a 5 point star in the center of an arrangement of 5 circles and a cross.

The hags believe the Great Runes are a piece of a divine alphabet, which spell out an order or logic of all things called the Golden Rules. The Sisters of the Black Church were forever changed when the first rune was stolen. They now have no mercy for those who trespass the Golden Rules.