A railgun is a linear motor device, typically designed as a weapon, that uses electromagnetic force to launch high velocity projectiles. The projectile normally does not contain explosives, instead relying on the projectile’s high speed, mass, and kinetic energy to inflict damage.
Basic idea I had in mind with this concept would be an expansion upon Iron with elements of Lightning, the same way Storm expands Lightning and Wind. So, slow attacks/attack casting, but heavy damage and strong close-range potential. It would be more flexible tho as it’s magnetic control over Iron, so attacks would have more movement going on rather than just basic “oh, I blew up”, “oh, I threw a ball.”