Gem of Seeing
Wondrous item, rare (requires attunement)
This gem has 3 charges. As a Magic action, you can expend 1 charge. For the next 10 minutes, you have Truesight out to 120 feet when you peer through the gem.
The gem regains dice:1d3|noform|noparens|avg (1d3) expended charges daily at dawn.
Source: Dungeon Master’s Guide (2024) p. 264. Available in the SRD and the Free Rules (2024)