It is from the most excellent “Magneto: Testament” miniseries by Greg Pak and Carmine Di Giandomenico. I don’t usually go for historically based comic books. This one and Jon Hickman’s Manhattan Projects are the only ones I can think of off the top of my head that really wet my noodle. This one’s great, and Magneto’s powers really have very little to do with it.
Oh, that’s right. Your prize? The pride of winning!