All of these special zombies are all with the lich. After all, the lich would prioritize himself
Life in prison is extremely dangerous to those that have a high status such as this lich
One wrong mistake and everything a person has would vanish in the next second
It isn't that rare for assassins to occur, in fact, it was very common. The higher a person's status was, the more danger they would face
The strong would be able to obtain more of the limited amount of mana inside the prison causing the others to own less and in return, it would make them weaker
If they die, others would have a chance to obtain some more mana. The logic was that simple
That causes the lich to have the habit of spreading the lower leveled zombies while keeping the stronger ones with himself at all times to keep himself safe