It appears that revivification may well have existed in some form prior to the Interregnum. When discussing the murder of the Marquis of Pepperfield by Kathana e'Marish'Chala (The Phoenix Guards, page 115), special mention is made of the fact that his spine was severed, and paint brushes stabbed into his eyes, which "because she had done these things, his life could not be saved." It seems likely that, similar to teleportation, revivification may have simply been much more exclusive to the upper-classes before the Orb was "improved" during its time in the Paths of the Dead.