Lantern of revealing
(Dungeon Master's Guide v.3.5, page 261)
Price (Item Level): 30,000 gp (16th)
Body Slot: — (held)
Caster Level: 5th
Aura: Faint; (DC 17) evocation
Activation: Standard (manipulation)
Weight: 2 lb.
This lantern operates as a normal hooded lantern.
While it is lit, it also reveals all invisible creatures and objects within 25 feet of it, just like the spell invisibility purge.
Prerequisites: Craft Wondrous Item, invisibility purge.
Cost to Create: 15,000 gp, 1200 XP, 30 days.