The Mercer-class Doomsday Device is an exceptionally powerful terran weapon.
One was detonated on Wotan II by a Terran Confederacy extremist. It created a blast within the planet's core that sent volcanic ruptures to the surface. The explosion brought forth to the surface the natural riches of this world.
1998-11-25. Inferno StarCraft Compendium Map Archives. Accessed 2007-11-03.