[quote=Reaper]
A sniper round with non-magnetic bullet. It's just insurance, really, since you can't use magnetism to stop bullets you don't know are coming for you.Fire works pretty well, or any kind of energy weapon or attack that isn't electricity (assuming his magnetism affects electicity)
[/quote]

I'm already drawing up an idea of what to use against magnetism, something that will work against it, not fire, or energy...