Ebongarb

Wondrous item, artifact (requires attunement)

The long, dark, otherworldly cloak named Ebongarb moves like an animated inkblot, leaving onlookers attempting to discern its intentions and instincts. While wearing this cloak you gain the following benefits.

Cast into Darkness. No source of light within 300 feet of Ebongarb can be brighter than dim light. Light sources previously brighter than dim light are reduced to dim light.

Epic. Ebongarb is an Epic magic item, and its effects are Epic effects.

Random Properties. The cloak has two major beneficial properties and one major detrimental property, which are chosen randomly.2 A new set of properties is chosen each time a creature attunes to the cloak.

Secrets Revealed. The cloak has a passive Wisdom (Insight) of 25 to determine whether creatures it encounters are being deceptive or hiding information.

Sentience. Ebongarb is a sentient neutral evil cloak with an Intelligence of 23, a Wisdom of 24, and a Charisma of 27. It has hearing and truesight out to a range of 120 feet. The cloak can speak, read, and understand Common, and it can communicate with its wearer telepathically. Its voice is sonorous but cold. While you are attuned to it, Ebongarb also understands every language you know.

Shadowmeld. While hidden while wearing the cloak, you are invisible unless you choose not to be.

Slicing Shadows. The cloak is a weapon with the finesse property and can be wielded without using a free hand. An attack made with the cloak deals 1d4 slashing damage on a successful hit and has a +3 bonus to attack and damage rolls.

Personality. Ebongarb engages in constant surveillance and feels its wearer is never paying attention to anything.