User blog comment:Jekkoi/RWBY Vol 2 Episode 1 thoughts-(spoilers)/@comment-68.183.65.206-20140725014318/@comment-25090813-20140725031016

Oh yeah! Either a) Its an error, b) The RWBYverse makes use of metals/materials unique to its world or c) Pyrrha's semblance works in a way to control magnetic field in a similar way to Magneto-->detail