Oh, no. The terrible "machines don't work in dungeons" line. Maybe it is explained in the novel, but dropped like this sounds so stupid. Yeah, phisics are bent by magic, but there has to be some underlying principle still valid, or I call bullshit. Electricity can't happen without magic? Yeah, fine. But how do neurons work then?
When you magic does whatever however, the plot built around it turns weak, at least to me.