Bother.

I need a magic system.  Specifically, a magic system which utilizes various (mineral?) dusts as a focus or catalyst, and leaves a byproduct which can be used as a drug.  I *could* just fake this up and use unreal 'magical' substances, rather than wikiing piezoelectric, pyroelectric, and electrostatic minerals (and not finding them useful, because powdered quartz and lime would have effects on the human body that are a little more deleterious than intoxication), but at the same time, I also want to figure out the consequences and ramifications of material-powered magic...

I blame World of Warcraft.