Only brought those two... That sounds suspiciously like not following the order properly.
Trap sprung.
Ah, it was Stolas's trickery. Forgot exactly what powers she had.
Sacrificing people with no benefit to offset that is just dumb. Even if you call them livestock, livestock still has a value. It's not like ranchers just kill off cattle unless there's a very good reason. Same goes for any kind of plot with some character treating people like property. Just how badly do those authors think people treat their property? Evil for the sake of Evil. It's like Dick Dastardly cheating, but at least he had class, and he was aware of it.
Check mate.
Seems like a fitting end for him.