I think Loredweller refers to the Death Spell. I recall it from the spell descriptions in the game manual (Look, my memory is soooooooo good
The description for the death spell says something like: "...instantly kills anyone in the area with n Hit Dice or less, but a character slain in this manner can be brought back to life via a wish..."
@Loredweller, you mean this one right?
But you never die from a death spell, so don't worry about it. Your summoned creatures die from enemy DS, but I don't think limited wish brings them back (never tried it) and I don't bother either. Just summon more!