The real trump card that Dark Overlord was keeping in his tattered Ghost Robes was none other than the Crown of Resurrection.
After killing the Green Corpse Emperor, Ethan not only collected the Crown of Resurrection created from his Twin Origin Life Card, but he also took the Corpse Emperor's.
After checking the information on the Crown of Resurrection, Ethan learned that it was useless in his hands but would be an absolute trump card in the hands of the Dark Overlord.
This Abyssal Artifact can only be used by an Undead Creature, and it can only revive Undead Beings.
Of course, there were limits to the revival. It could be used to revive all the Undead Subordinates under the control of the owner, who must also be an Undead Being.
Once activated, it can be repeatedly used three times, but if used three times, there is a cooldown of 100 years.
If used only once, the cooldown will be 10 years, and if used twice, it will be 50 years.
