Sacrifice Engine

The Sacrifice Engine was a large superweapon powered by the Sanguinare. This was Kraxnor's attempt to rid the universe of a build up of dark energy that threatened it. It was to harvest the souls of four planets in order to open a rift that'd rid the universe of the energy. The plan was stopped by the Twelfth Doctor, Grant Gordon, Lucy Fletcher and Jennifer Fletcher who removed the Sanguinare, causing it to detonate along with the Sycorax spaceship. (COMIC: Ghost Stories)