The Magna-Kannon, also referred to as the Doom Diver is an outlandish and bizarre Ork technology created by Mekboyz. It is unknown whether this is the name for the weapon it carries or the vehicle itself. An anti-aircraft weapon, the Magna-Kannon consists of a huge electro-magnet which can be used at considerable distances. Pointed at the sky, enemy aircrafts are grabbed by the magnetic field and can then be sent crashing into whatever direction the crew desires by turning the magnet.
The Magna-Kannon is one of those old models released during the early years and thus, looks absolutely goofy in appearance. With the fact that it has a literal giant magnet on top, it looks like something out of the old Looneytoons cartoons then something out of Warhammer 40,000. Some may mock its cheesy appearance, but usually most would agree that it is old school. And like most things old school, it is Awesome.
The Magna-Kannon could also be seen as the spiritual precursor of the Lifta-Droppa as they both practically use the same principle and function.