The huge-ass area it was in mysteriously got deleted.
If you want the area back you'll have to petition JLH.
Some of the greatest conjurers have destroyed themselves in an attempt at casting this extremely powerful spell known only to the highest order of magi. The advanced spell devestate channels the raw power of the casters deity enabling him to exert an unbelievable blast of tremendous energy upon his foe. Though the chances of meeting up with such a powerful mage is low, those who do cross the path of these powerful spellcasters rarely live to tell of it.
