1. challengers MUST create a username and a team on this site, http://www.pokemonshowdown.com/
2. Challengers have to then register there 8 pokemon on there challenger thread.
3. Challengers cannot have duplicates pokemon.
4. Challengers can change items,but they cant have two of the same kind
5. all battles are best out of one
6. challengers can only have up to the OU tier (so no UBERS) and one legendary in the OU tier