Downside
It was difficult for Jason to make use of the fact that he could clearly recall Lux's mana fluctuations.
After all, there were thousands of people inside the village.
They all hailed from the same race so their basic composition of the mana fluctuations' structure was more or less the same.
There were huge differences, but Jason was still able to perceive the minuscule similarities followed by the alterations their soulbonds caused.
Unfortunately, this was not helpful to allow him to find Lux.
Even if he managed to find him, there was no way that he could attack him in the open.
Jason wanted to be as stealthy as possible because there were more than a few powerful Cultivators inside the camp.
Even if he killed Lux, it would probably take him a little bit of time, which was more than enough for the human cultivators to react.