Dust of Disappearance
When you sprinkle this dust over yourself, you disappear from sight until you do something to shake it loose.
Consumable 125 gp
Utility Power (Illusion) Consumable (Minor Action)
Effect: You sprinkle this dust over yourself or an adjacent ally. That character becomes invisible until he or she moves or attacks, or until the end of the encounter.
Published in Mordenkainen's Magnificent Emporium, page(s) 98.