It was. You strike with ferocity, and little more is needed versus a single ghoul.

[ Unholy magic swirls around Koltira's fingers as he turns his hand palm up, palm down, and back again. ]

I cannot create anything with true sentience, if that's what you mean. Not without a sentient body. Ghouls and wights and so forth--I conjure them from the dust and bones of the earth. They are simply constructs. But some are hardier than others.