Hag's Eye

Often fitted to a pendant or other wearable item.
The hag eye is usually entrusted to a minion for
safekeeping and transport. One of the attuned
creatures can take an action to see what the hag
eye sees if it's is on the same plane of existence.
A hag eye has AC 10, 1 hit point, and darkvision
with a radius of 60 feet. If it is destroyed, each
attuned creature takes 3d10 psychic damage and
is blinded for 24 hours (no save).