Check Toys R Us.
You have to get oak's letter at on a special event.
November 3rd 2015
No, you have to get Shaymin by event.
Haha I don't even know what a shayman is!
You can only get Shamin from a copy of Pokemon diamond or pearl through a special event then you must trade .
No Shayman can't evolve but only in PKMN Platnuim (i think) you can use a special flower to evolve Shayman into sky form
After you get an Event Shayman (either from Platinum or Event) (Diamond and Pearl won't work) go to the flower shop next to the gym in Goldenrod city with the Event Shaymin and you'll receive it from the owner.
Shaymin is an event pokemon,so you must wait for the next shaymin event.You can keep track of events at serbii.net
yes no
easy
You'll need to the event item called Oak's Letter and go to Flower Paradise. It is unobtainable anymore. You'll need to trade for one.
Shayman is a powerful and rare pokemon. You must cheat, hack OR go onto youtube and type in the box, 'Catching Shayman without cheating or hacking'. you can also do the same for Acires and Daraki or how ever it is spelt.