oh so like Gu poison ? https://en.wikipedia.org/wiki/Gu_%28poison%29
wait i though all Mugos were already one single entity that got split into different personalities ?? no?? Didn't unhinged Mugo said that he was so hungry and thus the monster Mugo was born/created who mostly slept except when a scarifies came?? something like that?? or should i reread from beginning cause i'm missing something?
Makes a lot of sense. In this case I believe they put a person (original Mugo's body) in a very big jar based on the flashbacks. And inside they put venomous creatures like a Snake spirit and more because they wanted to create a god. They will probably become one entitiy that is not split anymore but has traits from all of them if Mugo recovers his memories.

So the book jaheon published is about something like poisonous magic qhere you will put all kind of venemous insect on a jar then they'll see who will live if i interpret that correctly (this bitch is running on pure caffeine and dooing my rrl on research). The being that is like on the plot the unknown one, monster mugo, unhinge mugo, and that granzaddy zen mugo. Did jaheons clan put a ritual to make this happen is this why mugo in all that one body,
Who is the god that was trapped qith the other mugo? What is the involvement of jaheons family on this nightmarish ritual and for who?