"Undead Recovery," the skill, involved infusing corpses with a large amount of magic power and drawing extensive death power from other corpses to make them stand up again.
Though they looked similar to before their demise, they had become undead creatures.
However, the greatest function of this skill was that there were no limits to the number of creatures it could affect.
The undead creatures revived with this skill couldn't be improved, and their intelligence was uncertain, but on the upside, they could be continuously created. There was no issue with how many were made, as long as there was enough magic power, corpses, and time.
One could say that if one were not a Lord, this skill would certainly be considered a divine skill.
If it hadn't been for such a great victory this time, such a skill would likely not have emerged. This skill probably played a very important role in the rewards from this victory.