[Helion]

Harsh blow isn't a bad skill, but it's best use is for stealing 2 souls at once, not as an AoE, since it really doesn't measure up IMO. You get a feel or it after a while, and the pause you have to take before you can cast your next skill is great for stoning and potting without losing your attack rhythm. Still, it would be much more useful as regular damage and not magic damage, because you will never develop enough INT stat to make it worth it in the damage department.