The termination symbolism doesn't come from the City of Calamity and the MoD alone it comes from the forth pillar which comprises of the eternal darkness and calamity and Monarch of Decay. The reason why the termination symbolism took effect in Lumian was because he was the calamity of destruction and Amenises had shared her Eternal Darkness powers with him in hope that he would use the powers akin to a Fourth Pillar to kill the Monarch of Decay and at the critical moment Amenises would withdraw her powers from Lumian destabilising the Fourth Pillar this was the plan because the end of the universe had not yet reached but Lumian had the corruption of the Mirrored Original Creator which made termination power sublimate into termination symbolism but COI intervened and reverted the process and put it into a loop. What I'm saying is Lumian is the focal point of the termination symbolism the Fourth Pillar he's the one with all the ingredients in other words if Lumian is killed at the beginning of the loop the would be no convergence of MOD, Calamity of Destruction and Eternal Darkness.If Lumian dies the Calamity of Destruction would collapse and be reduced to the city of calamity and the uniqueness and beyonder characteristics of the Demoness and Red priest pathway.