shaymin has been obtainable for a while. you have to have oak's letter or get one of the movie ones through toys r us from awhile back. I got mine through a trade.
And o yeah i almost forgot i havent looked recently but your not sopose to use shamin since there is no event for it yet and you can only get it by hacking. I dont care at all you can use shamin against me anytime but some one might not like it.
Ya gg that was a pretty good match I was really worried you last was going to be something that could kill dragonite. Also that was one of the longest stall walls i have ever been through. If you ever want a rematch just message me some time.