User blog comment:TheCarrotSaysYumYum/FT0 8 - Magnolia is on Fire?/Blue Cat Happy, Review./@comment-24930767-20150220142842/@comment-7418318-20150220151131

Maybe it's made out of that material that supresses magic same as the cells and shackles the magic council uses (will use?). But then the question is how they got their hands on so much of it.

Or is Mavis able to turn regular metal into such anti-magic tools?