So in looking through the new Player's Handbook and Dungeon Master's Guide, it occurred to me that this blog's namesake spell did not make it into the list of Wizard class abilities. I'm sure they're saving it for the Bard (whenever the new Bard makes an appearance; I hope they take a page from the Wheel of Time RPG and make them more like Gleeman and less like a Warlord with spells...). Still, I can't let the place go without it's spell, so here's my take on it:
Glitterdust - Warlock/Wizard/Bard Attack 3
You raise your hand, and a fine silvery dust falls through the air. It clings to everything it touches, even eyes; it makes the invisible seen, and the seeing blind.
Daily * Arcane, Illusion
Standard Action - Area burst 2 within 10 squares
Target: Each creature in burst
Attack: Intelligence vs. Reflex
Hit: The creature is blinded (save ends).
Effect: Creatures in the burst that are invisible become visible and cannot become invisible again until the end of the encounter.