To nail kornuel by myself I would need likely to hurt him a little before sleeping him. Followed with curse/blind/deafen/scourge/poison as a base. Followed with a potent fiend. That may have done it. But the chances of me landing all of those scrolls much less having them all available at the time I have him slept are very small.

It was hard to just kill him with two people. Another tripper and I. The reason being? Because lowering his dex does a little but hardly anything because his evade is based of charisman. Giving him a few openings to run if he doesnt spam commands.