In theory, combat techniques, whether battle energy or death energy, are universal.
Of course, this is just in theory. In reality, most combat techniques have many variations and differences when using battle energy and death energy.
Only a few combat techniques can be completely universal in both.
However, Fang Ka doesn't mind. If they can be completely universal, then players are lucky, just let them use it.
If they can't be completely universal and have many differences, then let the players tinker with them themselves.
You can't doubt the creativity and research ability of players; they will definitely be able to adapt it to themselves. It's just a matter of time at most.
As for the death energy auxiliary potion, this was something Kain developed while he was still alive.
