A Seismic Crucible is a Necron device only wielded by skilled Cryptek Geomancers. With a Seismic Crucible, the bearer can command the very earth beneath his feet and, more importantly, the feet of his enemies, to induce localised tremors in rock, metal and even the air itself. The energies unleashed by a Seismic Crucible often stun the enemy for crucial moments, allowing supporting Necron forces to finish them off.
- Codex: Necrons (5th Edition), pg. 85
- Deathwatch: The Outer Reach (RPG), pg. 125