Hmm, is that from the patch?
In Armored princess a lot of spells have been changed, for example Dragon Arrows no longer completely ignores defense, just by a certain percentage. Also, Plague actually increases Undead morale when they are infected (weird people, these undead folks...
)
Best spell change is that the useless Shroud has been merged with the Greasy Mist spell, so it also inflicts fire weakness on people inside the cloud, as well as reducing ranged damage by more percentage (30% on level I)