Guardian Ghost (•• to •••••)
Prerequisite: Sanctum
Effect: A wise mage fears what he doesn’t see as much as what he does see. While an empty corridor in a sanctum may look like an easy opportunity for a quick raid, it’s entirely possible that spiritual forces are guarding it, hiding in Twilight.

A Twilight ghost has been anchored to an object or room within the material sanctum and commanded to guard the entire sanctum against intruders. The ghost will only heed the commands of its masters (i.e., anyone who has contributed Merit dots toward the purchase of this Merit); the ghost will treat all others as hostile unless commanded by its master to exempt a person from its ire.

The masters do not need to be able to converse with the ghost (it can understand their commands), but they can’t see it or hear it without using the Death 1 “Speak with the Dead” spell, unless the ghost uses a Numen like Ghost Sign or manifests. (They can command it to do so.)

The dot rating of this Merit represents the power of the ghost.

 
The player or Storyteller creates the ghost, distributing its Attribute dots among its Power, Finesse and Resistance traits, and choosing its Numina.
Drawback: Ghosts can be controlled by other mages using the Death Arcanum. They can also be driven out by an exorcism, which even a Sleeper can perform. (See “Exorcisms,” p. 214, in the World of Darkness Rulebook.) If that happens, all dots in this Merit are lost.