Dust of AppearanceLevel 13 Uncommon

This plain pouch holds a single handful of sparkling dust, which it periodically renews.

Wondrous Item        17,000 gp

Power ✦ Encounter (Standard Action)

Pull a handful of dust from the pouch and throw it into the air (close blast 3). Doing this creates a zone that lasts until the end of the encounter. Invisible creatures and objects within or entering the blast become visible and can't become invisible again until the end of the encounter.

Published in Player's Handbook, page(s) 253.