The World Reaver is a horrendous machine of terrible power employed by the Burning Legion. The World Reaver is said to be one of the most massive and powerful pieces of technology ever known, greater even than the Destroyer flagship of the New World Order. The World Reaver is the personal siege weapon/mothership of Lord Mannoroth. The great machine was gifted to the pit lord by Archimonde the Defiler himself.
In terms of size, the World Reaver is comparable to Earth's moon. It is clad in the darkest, most impregnable metals in all Creation. It constantly belches toxic, green fel vapors. This gas emanates from its power core, an accumulation of chaotic forces left over from destroyed planets. Indeed, the World Reaver is powered by the destroyed remains of planets.
The World Reaver has layed waste to countless worlds, worlds that are now barren, crumbling, and lifeless - a testament to the might and horrific power of the Burning Legion. Now that the Legion and Mannoroth have invaded Mundus, it is only a matter of time before Mannoroth unleashes his pride and joy on the hapless races he wages war on.