Question

How do you get a Shaymin without an event, and without cheating? Is it somewhere in B/W 2?

Answer 1

You can't catch Shaymin in BW2. You can only get it through GTS, from a friend, AR, or hacking. There is a person who created a legit way though:

http://www.youtube.com/watch?v=gPV77MJwTt8

Comments

the video helps alot!:)

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Your welcome. I love them too. It got me awesome pokemon

Answer 2

You cant unless if you get one from the GTS or if someone is willing to trade it with you. Events and cheating are the only ways you can get a shaymin.
Source: experience