Ossified Ozzy’s Oracular Opticon

Wondrous Item, common

You choose a creature you can see with this brown and green eye and mystically mark it as your quarry. Until sunset, you have advantage on any Wisdom (Perception) or Wisdom (Survival) check you make to find it. If the target drops to 0 hit points before sunset, you can use a bonus action on a subsequent turn of yours to mark a new creature.