The only flaw was the Candle Dragon Transformation. It didn't have the blood of other Real Spirits or beasts. Otherwise, if he refined them, the second transformation technique would come. Even so, with the special nature of the True Spirit Treasure Technique, besides transforming into a Candle Dragon, he could also change his appearance. When he refined more and more blood of Real Spirits, the transformation technique would become stronger and stronger. He could change his soul to the point where he could pass off the real as the real.