( Many many moons ago , when the Archangel's were still in their childhood years )
The unnamed god : "Mana has many forms and shows a close bond with the laws of the universe.
However mana is a crude form of fuel , and your bodies can be taught to refine this crude fuel into something much finer and much more efficient to convert to energy .
The two best ways to refine this energy is holy mana and dark mana".
The god then proceeded to produce holy mana in one of his hands while producing dark mana in the other.
Sariel : "Ooh , ooh master , can our bodies refine both the holy mana and the dark mana and make something like holy-dark mana? "
Sariel asked innocently as he clapped both his hands together.
The unnamed god smiled , he loved kids for this very reason , their curiosity seemed refreshing to him.
He shook his head and said " If i combine them then they consume each other until both of them die ".