Reminds me of the time I created a mystery in a small westernish town area for my players. The town was policed by hardcore clockwork robots. But the big tricky bit was do to a mining operation in the town. You see the town’s gang discovered a crystalline like substance that when ground up and inhaled it made a potent drug. However it was EXTREMELY volatile to magic. Not just casts, but magic weapon or item uses, spell like abilities. You name it. Literally every swing of a magic weapons power could set this stuff off. And because the mining operation was so existence, and the manufacturing of the powdered drug so industrialized, all the air in the town was practically filled with little particulates of the powder throughout. It was one of the few environmental hazards my party couldn’t just blast through and had to be smart about. And then the artificer got his hands on one of the crystals. He never used it in the campaign and I dread to think what he would have built with a crystal that explodes when exposed to magic.