Aside from food, music, and sex, blowing things up was one of Michael's very favorite subjects, and his expression took on a definite note of interest for the first time -- considering the topic, this was probably more unsettling than encouraging. He took another sip of his beer before settling his elbows on the tabletop. Just this once he decided not to comment on the 'innocent people' part. Potter wanted to waste time moralizing, he could do it with someone else.
"I can make it actually work if that's what you mean. What most people think with bombs is it's enough if you make a little noise and fire. Bullshit. If you don't destroy something, it's like pulling the trigger on a gun and missing your target." Which told him that whoever had set up the Leaky and the Prophet were either amateurs or fucking around. "So what you do is, you can set up containment wards so the blast don't go beyond the boundaries. Destroy just the room you're hitting. If you've got enough time y'can blow up the paperwork or whatever it is, leave the rest of the room untouched. Pretty obvious hint there, I'd think." Michael drummed his fingers on the surface of the table. "Not sure how t'leave a proper calling card, though."