Healing magic and Shadow Extraction presumably/logically/scientifically work like this...
Since mana contains information, healing magic focuses on the information of mana involving the original state of a being, reverting a non-prime state into a prime state, albeit potentially excluding blood, and the rate of such depends on the mana of the healer, the time elapsed since the damage, the strength/mana concentration of the target and the chance of survival and/or lack thereof.
Time is a factor due to information naturally becoming scrambled to the extent of loss over significant periods, similar to memories throughout our lives, both in terms of wounds like a missing limb and taking excess damage to the extent of potential death.
Shadow Extraction works the same way and has the same kind of limitations, especially since Shadow Soldiers act similar to how the being was in life.
Since mana contains information, healing magic focuses on the information of mana involving the original state of a being, reverting a non-prime state into a prime state, albeit potentially excluding blood, and the rate of such depends on the mana of the healer, the time elapsed since the damage, the strength/mana concentration of the target and the chance of survival and/or lack thereof.
Time is a factor due to information naturally becoming scrambled to the extent of loss over significant periods, similar to memories throughout our lives, both in terms of wounds like a missing limb and taking excess damage to the extent of potential death.
Shadow Extraction works the same way and has the same kind of limitations, especially since Shadow Soldiers act similar to how the being was in life.