In fact, the opposite was true; the Immortal King of Reincarnation had devoted his entire life to perfecting the path of reincarnation. For that reason, he even established the Supreme Hall of Reincarnation, hoping to make the elusive and fundamentally forbidden path of reincarnation manifest in the world. Although he had some achievements over the long expanse of time, it was precisely because he devoted so much time to this endeavor that his overall combat strength was not considered very strong, otherwise, he wouldn't have bled to his death upon the vast yellow sands of the Frontier Wilderness.
The reason it was terrifying lay in those two words — reincarnation.
These words were too domineering, filled with unimaginable taboo, and absolutely not something that creatures could aspire to touch, yet the Immortal King of Reincarnation had, through his own power, cultivated real gains in this unprecedented path of the Great Dao.