Wondrous Item

Uncommon

Illusion Insight. While wearing the Twilight Dewdrop Pendant, you gain a +5 bonus on Investigation or Perception checks to discern that something is an illusion. This bonus can be used whether you are actively searching for illusions or passively noticing them.
  Faerie Fire (1/day). The pendant allows you to cast Faerie Fire (save DC 13) without using a spell slot. Once this ability is used, it cannot be used again until the next dawn.

Cost: 400 gp