Pros
-Grass typing allows him to take on terrakion and keldeo with reletive ease.
-The possibility to do 180 for just 2 energies.
-Energy acceleration attack.
-Decent bottom stats
Cons
-110 HP is terrible for an EX.
-Very bad early game.
-Relies on opponent taking prizes to do be big damage
I think it's a pretty risky card. If you play it when you're ahead of prizes, you won't hit for much. But if you play it when you're losing, you'll hit for max damage, but risk having your opponent take a win. Ironically, I think it's best to use when you're already a prize or 2 away from winning. It basically ensures victory because even if they can catch up in prizes, that will only help power shaymin up.
Playability 8/10: (hard to rate)
Artwork: (10/10) I like the full art.