Humanity's mastery of the laws of physics during the Dark Age of Technology led to the creation of many techno-arcane devices of unbelievable power – gravitic weapons capable of tearing any target to shreds, molecular disintegrators that quite literally did what their name indicates, anti-matter warheads fitted into miniature AI missiles, and worse – devices capable of tearing open rifts into the Warp, psionic beams that could burn out a creature's soul; basically any dark and abominable device that can be imagined. Luckily for humanity the knowledge of how to produce and maintain these weapons was last during the Age of Strife. The Adeptus Mechanicus still guard the secrets of some of these forbidden weapons, vigilantly working to prevent such terrible tech-heresies from falling into the wrong hands. Other weapons have passed into obscurity, for which we shall be eternally grateful. Certain degenerate xenos species, however, have no regard for the works of the Mechanicus and continue to employ blasphemous of similar nature (the vile Eldar are especially guilt of this).