"Corrupted a beyond epic ritual spell that was faultily made with blood, companions and enemies dying around me, and then died myself. Made a 5 mile crater a half mile deep, taking out a fair chunk of a mountain range. A couple other things might have contributed to it as well, the impossible amount of spells being slung around, the number of undead, and the natural magics of the area going wild probably also didn't help. Drove me insane for about two or three hundred years, and when I came too, I was standing in a plane that I had stripped of life down to the smallest living organisms. So for worst possible ascensions on accident, I think I take the award, cake, and caboodle."