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an arena you can customise yourself
with different tools to use
place several trainers in them with pokemon you trained yourself
they are only aloud to use a pokemon of a certain typ
to make sure people wont make areas which are impossible to go through youd have to get to the end yourself once
then at the end your team will be waiting for anyone wo downloaded this arena
you can only us this if you conquered all battle frontier brains
other can randomly download arenas,
defeatand rate them and earn bp