Unlike the Allies Merit available in the World of Darkness Rulebook, which represents influence in a particular field or area, a Ghost Ally represents a specific being — a ghost who is able and willing to aid the character in her endeavors.
A Ghost Ally is built as follows. First, he has seven dots in Attributes, divided among Power, Finesse and Resistance.
These Attributes are used to determine the rest of the ghost’s Advantages according to the rules outlined on p. 208 of the World of Darkness Rulebook. The Ghost Ally has both a Virtue and a Vice, but no Skills. The Ghost Ally has a maximum Essence pool of 10 that is used to fuel Numina. The Ghost Ally has one Numen, chosen from those listed in the World of Darkness Rulebook. The Ally also has a single anchor that must be the character with whom the being is connected.
Finally, a Ghost Ally has a set number of bonus points used to flesh out the restless-dead character. With this Merit at three dots, a Ghost Ally has six bonus points, while the four-dot Merit offers 12 bonus points, and the five-dot version offers 18. These bonus points can be spent as follows: six points per additional Attribute dot, three points per additional anchor and six points per additional Numen. Also, for six points, the bond between ghost and character is made so strong that the character can see and hear the ghost when it is present, even without any psychic abilities. Without such a bond, the character cannot perceive the ghost unless it manifests or otherwise makes its presence known.