| Category | Miscellaneous |
| Type | bomb |
| Forge | varies |
| Smith | varies |
| Enchanter | varies |
| Location | unknown |
Null mines were created to punch holes through the Web of Magic. When detonated they would sometimes create a rift between systems or worlds. Because of their inherently unstable core, these devices did not always work. The core's hold unstable energy from Chaos; indistinguishable from some other elemental energy making them hard to find. Some have taken to calling this null energy - since it is not like what it looks like, it may look like elemental fire, but in reality is an energy that destroys other energies around it.
When detonated near a weak spot in the Web of Magic, the source of a world's arcane energy, the mine has a lot to feed upon; enough that it could keep a rift open for thousands of years before creating an area of dead magic. Eventually most rifts are closed by the Web's weave spiders or by those that see them as a serious potential threat to the stability of either side.
In the Creation War (1486 DE - 8777 DE), the primordials used null mines in the creation of rifts between Chaos and the worlds of Nawirrûs.
As Piranoths Steps fell to the demons in the Abyssal Release (7777 DE - 8777 DE), caches of null mines were found by the system's new masters. These devices would lead to another great conflict, the invasion of the Quara'tun System in the Demon Spawn War (89 GE - 269 GE).
In the Lith-Crillion Era, the Concubine General led an army from Fimbulwinter through a blizzard-like vortex. Made with a cluster of null mines, this ancient menace and her ice army passed through this rift to Bal-Kriav, attacking the peoples of Elemantum.