Cultivation of Immortality Begins with Refining Magical Powers

[Mortal flow + no system] A poor casual cultivator accidentally awakens and refines his magical power. By consuming spiritual energy, he can turn decay into magic! He directly refines useless elixirs that others don't want into genuine or even high-quality elixirs; He directly refined the ordinary monster blood into blood essence, and even extracted the blood successor talisman; An ordinary first-order demon core, but he was able to extract a trace of innate vitality from it... This is the story of a casual cultivator who relied on refining his magical powers to counterattack from the bottom and become an immortal.