Raze knew that he couldn't rely on the Dark Edge Sword Arts. It was the perfect set of arts for the situations he was in—an art that combined magic and Qi together. It was something that had a lot of effort put into it and would be better than anything he could come up with on the go.
So he decided to try and enhance it in other ways. One of those ways was to combine his Lightning magic along with a foot technique, allowing him to have superior speed and power when attacking.
He then combined it with the most powerful piercing technique the Dark Edge Sword Arts had, the Void Pulse Formation.
In a way, it was his most powerful attack that focused on a single point, with the main goal of breaking through any defense, and it had succeeded, but looking at the small drop of blood in front of him, it had only succeeded at the smallest level.