The Undead?

"How could it be? How could you achieve a seven-level upgrade without affecting your body?"

The evil spirit could not tell how Lin Huang had done that. Despite his real body being extremely strong, it only managed to achieve a four-level upgrade in its combat strength. It would not be able to maintain the stability of its body if there was any further improvement. Regardless of how strong its physique was, a four-level upgrade was simply its limit. It was an absolute rule.

One thing that the evil spirit did not know was that Lin Huang's Transformation Card was not used for the sake of strengthening his body but was only a substitute. Once the Transformation Card was activated, it was equivalent to duplicating a monster's body with Lin Huang's consciousness and his body was sealed on the other side of the dimension.