I checked out the code, and it's solid. It coordinates the timing between your client and the server - evidently the WoW codebase does not do real randomization, but relies upon the clock to generate numbers.
(http://s.wowinterface.com/preview/pvw12567_thumb.jpg)
Holee Crap. So I downloaded it, went into a couple MGT pugs and won everything. "Woo, sorry, guys, on a hot streak I guess, I'll pass on the next boss." I lied, rolled need on everything and won those too. Never rolled lower than a 92. Get this mod asap! I'm sure Blizz will make em pull it down.