Glitterdust

(Player's Handbook v.3.5, page 236, DnD 3.5)

Conjuration (Creation)

Level: ; Bard 2; Sorcerer/Wizard 2; Beguiler 2; Sha'ir 2; Jester 2; Savant 2
Components: V, S, M
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Area: Creatures and objects within 10-ft.-radius spread
Duration: 1 round/level
Saving Throw: Will negates (blinding only)
Spell Resistance: No

A cloud of golden particles covers everyone and everything in the area, causing creatures to become blinded and visibly outlining invisible things for the duration of the spell.
All within the area are covered by the dust, which cannot be removed and continues to sparkle until it fades.
Any creature covered by the dust takes a -40 penalty on Hide checks.
Material Component: Ground mica.