Simple Solution: Start testing the exact moment the programmers have it ready.Yes, this inevitably leads to another Judgement, where the set is leaked a month early, but noting especially terrible happened that time, apart for some "OMFG I DUN GOT SPOILERD!!" whining.
If you're on MTGO check out the Free Events via PDCMagic and Gatherling.
Other games you should try:DC Universe Online - action-based MMO. Free to play. Surprisingly well-designed combat and classes.
Planetside 2 - Free to play MMO-meets-FPS and the first shooter I've liked in ages.Simunomics - Free-to-play economy simulation game.