Ancestor's plan: as co-users of the "Corpse Holy Grail," they divided the Holy Grail into twelve parts to prevent anyone of them from betraying. Then, sealed by the Red Robed Bishop with Divine Arts, they suppressed the Immortal Earl, and all twelve of them together feasted upon the Divinity.
From the root, the curse was to be lifted.
Regrettably, the plan was doomed right from the start.
One of the Ancestors, "Ragnar," perished, but the Divinity inside him was not evenly distributed to the remaining holders of Divinity; instead, it was directly devoured by the Immortal Earl.
This Domain can dissolve the "Immortal" in an instant, and devour dozens of Transcendents in a single breath.
The four words Life Forbidden Zone are almost a perfect description.
The Immortal Earl and the Ancestors, they were still able to move because the "Divinity" inside their bodies, which was of the same Level as the Black Mud, balanced each other out.