Becoming alive once again after death is "Revival."
That should have been dead but did not die is also a kind of "Revival."
As long as it is related to "Death" but does not ultimately become part of "Death," it is "Revival."
The extraordinary energy of this world is born from natural phenomena.
The phenomenon of "Death" contains Death Energy.
"Bones" contain the Bone Magic Power needed for Bone Magic.
"Blood" contains the Blood Magic Power needed for Blood Magic.
Natural phenomena like "flames," "breeze," and others also contain corresponding extraordinary energies.
In the eyes of wizards who value elemental studies like Elemental Judgement, "flames" are caused by Fire Elemental Energy and "breeze" is caused by Wind Elemental Energy.
But in the eyes of pure Fire wizards and Wind wizards, the "flame" contains Fire Magic Power, and the "breeze" contains Wind Magic Power.