Could you EV train it in SpAtt/Speed and I will give you Suicune for Shaymin and then Arcanine for a trash pokemon and then when you done ev training arcanine, you give me it back and I give you mesprit/regigigas (you choose) k? :)
Can you learn it moves:
Iron Tail
Flamethower
Dragon Pulse
Thunder Fang
Here's how we'll trade: you trade me the suicune, arcanine and mesprit, I trade you the shaymin, and then I'll trade you back the Arcanine one it's been leveled. And which stats should EV train the Arcanine in?