Isn't Aura of Command bugged too after a certain point in the game? (i.e. causes crashes)?
Technically if you are talking "bugged" as in wrong, Deadly Gift (scorps at least) are overpowered but fun <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" /> and so is Freeze on weapons (but not the skill)
Spiritual Damage works. It is effective against orcs, trolls, dwarves, etc. but not on snakes, spiders, etc. Using Curse on animals would probably drop their spiritual resistance enough for it to work on them (never tried), but you might as well just hit them once more.