What's causing the use of magic to tire people out? Obviously is't a mundane world, but that sounds like more of an active magic suppresion effect so I'm wondering how that works. Also, what's this limits? Is it only for anything classed as 'magic', or does it cover all other abilities that aren't mundane but don't really come under the banner of 'magic' as well?

Also, how feasible is it for investigators to nab crew jobs for the movie? (Camera operator, sound technician, lighting technician, etc)