C27 Abnormal Doppelganger
And after studying Blood Shadow Clone Technique, the Sorcerer guessed the reason for this mutation.
That was the effect of the Rebirth Fruit.
The Rebirth Fruit was a miraculous fruit that had a certain chance of helping the Ghost Immortal reconstruct his or her body. That enormous life force had replaced the Blood Shadow Clone Technique.
The basis of cultivation was different