PBE

You don't

A long complicated process where you must show passports and ... OH f*** the joke. You normally sign up and they either accept or deny and the typically only accept the best players currently since they want people who would know how to BREAK whatever they are switching up so they can balance it all out to a degree before public launch, and yes they have to re balance but that's the nature of League. Too many variables to count accurately. So in the short, you don't have a good shot. Neither do I.