Standing before the dark palace, Abner saw neither its exquisite design nor its lavish decorations reflected in his Pure White Eye. Instead, he saw writhing tentacles bound by the power of Order!
So the palace itself was part of Zaratul? No, more precisely, His power had been distorted into a cage that held Him captive.
Roselle was probably still a Knowledge Emperor when he built the Dream Labyrinth Tower, but he possessed a Prince of Abolition characteristic, and he might even have held the Black Emperor's Unique... Creating a seal like this wouldn't have been difficult.
As he pondered this, Abner circled the palace several times, analyzing every detail.
Before long, he made a few more discoveries.
Returning to the palace's main entrance, he considered what he had found.
From what I've observed and seen through Rewind, the original seal also drew on the power the Chaos Sea projected into this Imaginary World... That means Roselle's split soul is probably trapped inside this palace too!
But now that the Primordial Moon has descended, some of the power contaminating Roselle must have been borrowed for the time being, so the Chaos Sea's power went with it...
I also noticed a familiar pattern... Heh, I remember Roselle made a Silver Card that could connect to Sefirah Castle. But by then he was already a Beyonder of the Savant Pathway, so all he could see was an endless expanse of gray-white fog. He couldn't draw on Sefirah Castle's power any further...
But if he used a ritual to forge a mystical connection between that Silver Card and Zaratul, that might be another matter!
Is this another seal built around balancing the powers of the Chaos Sea, Sefirah Castle, and the Mother Goddess?
*From Baron Konwa regaining his sanity, to the Chained God escaping