The red-eye ravens were innately evil. They would torture their prey to death instead of killing them in one strike. They were very intelligent, cunning, and greedy. They were considered untransformed prehistoric demonic beasts.
More importantly, the red-eye ravens possessed a variety of abilities. Aside from mastering the illusion technique, they could also unleash the Tribe Formation. Utilizing their geographical advantage, they could even put up a fight against the True Venerable Spirit Plane cultivators.
Such a flock of savage demonic beasts was guarding Fascination's End. Consequently, it would be challenging for Chen Jingzhai and his group to traverse the canyon. Even Tu Ruoyan admitted that she would not be able to pass the canyon without relying on her identity as a member of the silver fox tribe.