From Oblivion Mod Wiki
This makes so that you can cast a spell on the pillar repetedly. You know, going there and getting the spell on level 3, a spell that takes 5 damage. Not fun to have used it that early. Well, this mod makes it so that you can do it more than once. You can also do it without the quest from the mages guild. You might have to start a new game to get this to work. Or not have done it yet. Or open the console, press the pillar and enter, ehh think it was "set doonce to 0" without the "".