Dust of Magic Finding (3.5e Equipment)
From D&D Wiki
Dust of Magic Finding: This white dust has the appearance of flour, until cast into the air. When this is done, it coats everything that produces a magical aura within a 30 foot radius in a swirling pattern and turns a shade of blue depending on the strength of the aura. In the case of a non-solid that produces a magical aura such as a Fog Cloud spell or a potion, the dust is suspended in the substance instead of coating it. The dust does not harm or impede magic, vision, or function in any way. Anyone viewing an affected substance or object can discern the strength of the aura and may make a spellcraft check, as the Detect Magic spell, to determine the school of magic by examining the particular pattern of swirls. The dust clings to the substance or object for 2d6+3 minutes before evaporating. Anything subject to a Detect Magic spell is subject to dust of magic finding, including creatures with a magical aura. Casting the dust into the air or identifying the school of magical aura is a standard action.
Faint; (DC 17) Divination;CL 1st; Craft Wondrous Item, Detect Magic; Cost 25 gp, 2 XP, 1 Day; Activation: Standard; Weight: — lb.; Market Price: 50 gp