Directed Energy Weapon. Giant particle beams of microwave or gamma radiation directed at one spot to combust or poison things in its radius. The technology has been around since the 1980s, by attacking foreign diplomats in their offices, called the “Havana Effect”.
Hmm, this is interesting and all, but she could have easily put something on the magnet that sticks to her arm. Also, its too far away for me to figure out if its right on her skin, or something else is on the magnet.
Go with a Suzuki Hayabusa model, those suckers are badass.