Palantir

A Palantir is a fictional magical artifact from J.R.R. Tolkien's Middle-earth legendarium. The term refers to a seeing stone that allows users to communicate with each other and perceive events happening in distant locations. Each Palantir is a crystal sphere that enables its user to see across vast distances and even glimpse into the past or future. However, the use of a Palantir can be perilous, as the user may be influenced or controlled by others who possess their own Palantir. The stones are central to the narrative of "The Lord of the Rings," highlighting themes of power, knowledge, communication, and the dangers of temptation.