Doom

After that, Ace tried to ask Doom a few questions. Like, what was his main ability?

He answered that he could raise complete bones into a skeleton. When Ace asked him how many mana he would need to raise a level 1 ordinary skeleton. He answered that he needed 2 mana. He also said he only needed 6 mana to raise a level 1 elite skeleton.

It shocked Ace. It meant, Geo needed 5 times more mana to raise a skeleton. However, Doom said that he couldn't raise a skeleton that had a level more than 3 than him. It meant somehow his skill was restricted. His factual level was 36 because Geo's level was just level 33, so he could only resurrect level 39 dead humanoid. It was somewhat different from Geo. Geo could resurrect any dead humanoid at any level, but the skeleton's level would be restricted to 3 levels higher than him.