Limbo Filter

When Limbo began to seep out into Earth, an unnamed Lich opened a Limbo Portal in his Phylactery so that all Limbo Radiation could be managed through it. When the Limbo Radiation eventually devoured his soul, convicts were forced to out their soul in the Phylactery as a new filter until they too died. Percival is the first Limbo Filter to learn to harness Limbo and has held his place as Limbo Filter for over 2,000 years. He now shares the title of Limbo Filter with old Percival.