Mystery behind the bloodline

'Clang'

'Kachaa'

'Puchii'

The fight between the young cultivators and the demon servants continued intensely.

After using his very costly spatial blades to save Snow Storm from the demon general, Ajax didn't even dare to use his essence of nature to attack the demon servants. 

Even if he wanted to use the essence of nature to use his other skills, that would not last even for a couple of attacks as he had already used 6000 units for the spatial blades earlier.

'The more I kill, the more powerful the next demon servant will be,'

Ajax's initial one-shot kill was not even possible with the lastest demon servants. He had to fight for a while before killing one demon servant. 

What's more, his essence of nature was very low now and with each injury, he received from the demon servants, his essence of nature was used to stop the bleeding from them.

'Should I use the bloodline now?'