Have you acquired your Shaymin yet? I can clone the one I have and send that if you want it for keeps; outside of cloning, you won't find a lot of people willing to give theirs up. :)
Is the Jirachi >
this< one? It's usually called the Wishmaker Jirachi, I think. I believe I already have the Mewtwo as well. Since I promised myself I'd play W2's storyline using only storyline Pokés, I have even a Rhyhorn sitting in my box in W2 not being used right now. If the Mewtwo is a keep as well, I can send Shaymin to W2 and trade it from there. Let me know. :)