The limited amount of mana reserve one has!
"After recognising the existence of such an overpowered ability, we decided to extract the skill from you. For us saints, we have immense mana reserve but we had to apply healing magic whenever we take damage. This skill would cut short the bother and passively heal us. The consumed amount would only be negligible."
Lazarus raised his eyes and was expecting a young man fuming with anger. But contrary to his expectations, he saw a young man immersed in his thoughts.
"Skills are extractable?", asked Adam with a tinge of disbelief. To his query, Lazarus nodded.
"Explain about it," the earthling probed but the saint wasn't ready to share the secret.
But when his other forearm was broken, he cried in pain and finally agreed, suppressing his anger.
"Innate Skills are something you're born with and is not transferable. But we finally found a way to extract it."
