/offtopic: When I first stared playing many moons ago, I thought that Banish would make the mob flee from you.

/ontopic: I would think that Curing undead would do significant damage to the mob provided healing skills were capped. But along that line of thinking, raise should be like death if cast on an undead mob and regen would be equal to poison when cast on undead. But that's just my random train of thought and two gils worth.