Ravenloft: Spectacles of Levitkus Drang for D&D 5th Edition

SPECTACLES OF LEVITKUS DRANG
Wondrous item, legendary (requires attunement)

While wearing these spectacles you gain a +2 to passive Perception and have advantage on Investigation skill rolls.

Additionally, these magic spectacles give their wearer truesight.

Finally, you have disadvantage on Wisdom saving throws.

Levitikus Drang was terrified of the thing that lurked under his bed at night, but his parents and five sibling told he him he was being weak and foolish.  So night after night, year after year he was tormented by the monstrous thing that threatened, taunted, and clasped at him, as he lay there, knowing that his family would not come to his rescue.  Sadly, when his family woke on the morning of his thirteenth birthday, Levitikus was gone, the only remnant his spectacles under his bed.  That evening as his mother wept in his bed, holding his spectacles, something compelled her to put them on.  She never stopped screaming at what they revealed.