Crypteks bend the forces of the universe to their will, creating impossible technologies and esoteric weaponry to lay waste to armies and destroy worlds. Time, matter and space are their playthings, as they manipulate the atomic structure of their foes or shift the laws of nature to obliterate all who stand before them. The aristocracy of the tomb worlds see them as a necessary evil, granting the Crypteks prestige and status in exchange for their mastery of techno-sorcery, and under the scrutiny of their lord’s court they will work their wonders for the Necron armies. However, a Cryptek cares not from whence this favour comes, as long as he has fresh subjects upon which to work his experiments.
— Warhammer 40,000: Codex - Necrons
