C383 Poison Sword Style.
'This is my... Soul Flow!'
Soul Flow and Soul Revolving and Soul Shock were the three major uses of soul power that he had invented. Proficiently using them could increase the probability of the creation of his own Soul Skill, and it could also increase the effect of his Soul Skill.
However, after ten thousand years, these three methods could only be learned in the inner court of Shrek Academy