Awakening of Evil

Hello everyone. In my map, in the first mission, Death Knights have been replaced or supplemented by Harbingers of Death, just like in the "Pack Leader" map. They have 300k HP and 7000 attack. But in "Pack Leader," they are part of the scenario, and killing them rewards you with Knights. Now, they have appeared on other maps, and I don't know if they are part of the scenario or just a glitch. Specifically, a group of 40 of these Harbingers, along with Knights, guards one of the artifacts of darkness (a cloak, to be precise).