Devour: As the name suggests, it's a skill that allows the skill user to assimilate any being around them who doesn't carry a will or the strength to resist. Although there weren't any living beings in the current era who were reported to have similar skills—until now, that is—from the recorded knowledge, one could only derive a single weakness of this skill.
Time limit.
Devour heavily tolls on the body of the skill user, given not only the remaining Soul Energy of the beings but their skills and remaining vitality is absorbed through this skill. As such, for a single mind to process so many things gravely affects the user.
Now how long can this specific wolf maintain this form, is a mystery. However, if they don't do anything then everyone here will surely die.
....
Alex gulped in apprehension as he gazed at the tall being that had transcended the form of a beast and entered the realm of a demon.