what is the criteria of getting beta keys ?

i please some1 to tell me what is the criteria for a beta key , or to tell me if it is all random :)

You can get lucky and hit the 5 min drawing. It is random but posting in the forums helps your chances. I would not count on getting a key this way. There are players that haven't received a key that signed up last year. If you are helpful here somebody may be nice and give you a key. The other way is to use the Pre-Purchase on the side and buy a support pack. You get at least one key with all of the packs plus points to spend in the micro transaction store.