I've got to agree with everyone about the hammer spell. However, I've found some spells to work much better on some creatures and not at all on others. For instance, the wind spell works great on fire elementals (blowing out the fire), but hardly even touches an air elemental. Lightning doesn't seem to work for me on all groups of creatures, only certain ones. I still have to do some more investigation but, I think Larian put some logical thought into what spells work best against what foe. So, I'd definately go with hammer as the first choice. I'm just not so sure yet about which one is the best for generic groups.
