It was a massive pay per view that had a series of 1 on 1 matches where the winner goes on to face the next person in line, and so on. So, if you entered and defeated Mastermind, you'd go on to face whoever was next in line but now you'd be weakened a bit because you just battled Mastermind. If you do a search for gauntlet city you will find its results, and if you look at the RP archives you can see the RPs people did for it. It turned out to be a very popular event.