The Machina Fini Mundi (Machine for the End of the World; doomsday device) is a device for which the plans were written before 212 BCE by Archimedes. In the early 1500s, Damien Vesper began working on the machine further and eventually discovered how to build it. It works by reversing the earth's magnetic pole (which occurs naturally between a very long period of time) rapidly by using super powerful electromagnets, causing the earth's core's rotation to alter, which causes the mantle's current to change too. Mantle altering currents will distablize subduction zones (places where the Earth's crust is unstable) and thus setting off a chain of earthquakes, tsunamis, and volcanic eruptions that would bring about the end of the world. It also reduces the Earth's magnetic field strength by 10%,