The Kell of Kells is believed to be a kell who cannot die, who cannot fall to any foe. The house of wolves is eternal, as the entire house exists in the same way as the vex- in the "time vortex". In other words, the house of Wolves exists in all of time at once. They cannot be wiped out. The house of wolves, and Skolas, Kell of Kells, they are immortalized in time itself.