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.
The banlist for this tournament is the same as the Balanced Hackmons ladder on the Smogon University server of Pokemon Showdown, and can be found on Smogon's strategy dex.
Best of three, single elimination.
If metagame changes occur during the middle of a round, they will take effect in the subsequent round.