Using death vision, Athos noticed that the corrupted energy stored in his body was keeping the ability active, without him needing to consume mana or focus on it. With a thought, the skill disappeared and his fist returned to normal strength.
Athos tried a few more times and found that his body held up almost any skill or spell he used, but there was a limit to how many skills he could maintain without becoming overwhelmed. Its maximum limit depended on the complexity of an ability or spell.
Abilities like death vision that used body parts he didn't already have were impossible, but now Athos was sure he could get his entire body back.
"It looks like a magical support organ that stores energy and can be consumed if you're in danger. It doesn't feel like it can recharge on its own, so you'll have to concentrate to recharge it, but it's still a great skill." Treevor spoke after Athos explained in detail.