With Demonic Dao Traces powering the attacks of the Demonic Sentinels, its attacks could be particularly dangerous for several cultivators.
Demonic Qi was already something that could cause the Qi of immortals to go in disarray, not to mention Demonic Dao Traces that would easily punch through their defenses if they were not prepared.
Even if they had used defensive Qi skills, there was a chance that the Demonic Dao Skill would be able to overpower it. It did not work the same as immortal Qi after all, and there was no guarantee a normal Qi skill would defend against it.
After all, Dao Skills were often a lot more powerful than most Qi skills. One of the few ways of defending against them was to use another Dao Skill. But that would only be possible if the person fighting knew that the opponent was using a Dao Skill.
