Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Fun fact: ASB Ho-oh, Groudon, Kyogre, Dialga, Palkia, Reshiram and Zekrom have more stars than Arceus. Mewtwo is one of the more average legends, having less stars than the fairies.