An Undead squad left Star Dragon City and, taking advantage of the still-open "Armand's War Spoils Warehouse," countless undead, filled with the idea of a lottery draw, were immersed in the Banshee Illusionary Dream instance.
Moreover, many people found that though the monsters in the Flydoves instance refreshed randomly and their equipment did too, their attack rhythms did not change much.
As long as they grasped the countermeasures and improved their combat levels, coupled with not too bad luck, they could generally fight their way to the mountain top.
The only difference was the choice after reaching the summit: a decisive battle with the Corpse Dragon or a willing retreat.
If they obtained good equipment, without a second thought, they would strike the Corpse Dragon first, ideally targeting the minor weak spot beneath its jaw. If luck was poor and no good gear obtained, then they would retreat and start over.