[@Rekaigan][@Tybalt Capulet]Correct! Metal maurader didn't sound right since that implies a mauraduer whos made of metal...so I went with magnet marauder which is his nickname but he is actually gifted with metal elementalism. Kinda like magneto like Tybalt said, he can manipulate any metal including tin, lead, foil, gold, ect. Easiest compared to or confused with magnetism especially since he is a pirate and wouldn't know any better. 

Someone with his powers but stronger could turn into metal but he's not nearly that tough. Right now this guy is basically you're first boss encounter. I figured someone would just pickpocket him but a small skirmish will also do.

Don't worry he wont be extracting the iron in your body like at the end of that one xmen movie...XD but yeah this was just to make guns/blades useless, so you guys would have to think of a way to steal the stone or beat him without conventional means. So something more sneaky and subtle.