Amulet of Penultimate Truth

The Amulet of Penultimate Truth is an artifact that dates back to the earliest era of Elvish tradition.
== Description ==
Amulet of Penultimate Truth
Wondrous item, artifact (requires attunement)
Increased Wisdom. While you wear the amulet, your Wisdom score increases by 2, to a maximum of 24. 
Quest-Giver. While attuned to the amulet, you can use your action to cast geas. After you cast the spell, roll a d6. On a roll of a 1-5, you can't cast it again until the next dawn.
Sight Beyond Sight. You have truesight. You can use an action to see as if you were wearing a ring of X-ray vision. You can end this effect as a bonus action.
True Precision. When you hit with a weapon attack while attuned to the amulet, the target takes an extra 1d6 damage of the weapon's type.
Truest Form. While attuned to the amulet, you are immune to disease and cannot be charmed or frightened. Additionally, you are immune to effects that would change your shape (such as polymorph).
Truth-Speaker. You can cast calm emotions, command, and zone of truth at-will.
== History ==
The Amulet of Penultimate Truth was crafted during the earliest ages of Urz by a powerful entity known as a le'shae named Kesh. After it was created, it was given to a human king named Rian of a Vazriel tribe that worshipped a six-headed serpent as its god. The Amulet gave him sight beyond that of mortal men and he saw the truth of his god. He used his power and influence to lay waste to a neighboring tribe that worshipped a many-eyed god. When the le'shae came to him asking him to help seal away a powerful foe, Rian gave the Amulet as his most powerful object and the key to help seal away the enemy.
Legends about the Amulet have been told throughout the history of Parnak. Some say the Amulet held the spirit of the Sword of Ultimate Sorcery within it because of the closeness of the le'shae and that powerful artifact. Other myths told of how the Amulet made the old Vazriel king able to command others with only the sound of his voice or a gesture. The historian Jonathan Hoppler believes that both are not far from the truth and believed from the onset that the Amulet was buried inside the Tomb of Daerlethoth. 
He believes that it, along with three other sacred artifacts gifted from the le'shae to man, can be used to unseal the Sword of Ultimate Sorcery and the spirit of the foe they sealed away so that it can be finally defeated.