Gem of Seeing

Source: D&D 5.2 SRD Magic Items

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 1d3 expended charges daily at dawn.