The Eye of the Psion (3.5e Equipment)
From D&D Wiki
Eye of the Psion: The eye of the psion is a magic artifact that is only usable by psionic characters. The "eye" appears to be a solid sphere of obsidian with a hole in one side, inside this hole what appears to be a green flame burns. This artifact replaces the eye of the character and becomes bound to them. It grants darkvision out to 60 feet or if the character already has darkvision it improves their darkvision by 60 feet. In addition to improving darkvision it grants the user permanent mind blank, thought sense and read thoughts. The wearer may cast true sight twice per day and gains the ability to see magical auras.
; CL <!-Caster level for spell-like effects, usually between 18 and 20-->;