The ghostly steps had been one of the skills that Clark moved in even when he was not intentionally doing so. It was a technique that had become part of him and who he was. This very fact was what Clark knew. However, he felt that he had barely touched the surface.
This feeling had somewhat come while fighting the lightning orc. Clark had felt a small feeling taunting him in the corner of his mind. A minuscule idea that the ghostly steps were just the start of how he should move.
There was also the idea that he could combine the way that Crim moved with the ghostly steps. A fusion of slime dragon flexibility and the speed that made someone seem like a ghost moving around untouched. This being the case, the pressure that Clark could feel under the wind blades and the flying pieces of wooden church pews made him catch this feeling ever so slightly.
