The Divine Armored Tortoise King was mighty. There was no doubt about that. And if it had been Yillister alone, it would have won sooner or later.
Alas, the great beast met its match in the army of the Celestial Realm, which was composed of multiple gods of various strengths and their respective angels.
However, even the combined might of the Celestial Realm's army wasn't enough to kill the Tortoise King when Ackster's Ichor ran through its veins. All they could muster was tie it down with a set of golden chains that Ackster sensed contained Heavenly Iron.
It was a material that Ackster had needed the flames of the world's Core to refine. Even the Tortoise King could no longer move when the golden chains tied it up.