Mewtwo EX Celebi Tornadus - RotomOverHeatz

4 Celebi Prime TR
3 Tornadus EPO
2 Mewtwo EX NDE
2 Terrakion NVI
1 Shaymin EX NDE
Pokemon Total =  12

4 Professor Juniper
4 Professor Oak's New Theory
2 N
4 Pokemon Catcher
4 Junk Arm
3 Switch
2 Eviolite
2 Pokegear 3.0
1 PlusPower
1 Super Rod
3 Skyarrow Bridge
Trainer/Supporter Total = 32

8 Grass
4 Double Colorless
4 Fighting Energy
Energy Total = 16

Strategy
This is going to be one of the bigger decks for upcoming States tournaments.  Celebi prime is the ideal starter, allowing you to attach an additional energy as long as it's in the active position.    Tornadus is your first attacker since after you attack, you move an energy back to the bench, powering up Mewtwo EX.  Mewtwo EX is the big hitter, dealing more damage for every energy attached to both it and the defending pokemon.  Terrakion is to help counter all the lightning decks that are currently in the format.  Shaymin EX is a late game sweeper, dealing more damage  for each prize your opponents taken.

Pokemon Analysis
I can't think of much that I would change to your pokemon list.  Since you lose 2 prizes with Mewtwo EX, it's a card that you probably won't want to have more than 2 of (my first thought was to increase it to 3, in case one was prized).  If you can find the room, a single shaymin might also help you move your energy around.  This would decrease your reliance on having mewtwo on the board early, making it vulnerable to catcher.

Energy Analysis
Instead of running fighting energy, have you considered running prism instead?  Or running 2 fighting and 2 prism?  This would give you more options for your energy attachment rather than being restricted to only certain pokemon to be most useful, however, it would make you more vulnerable to lost remover.  With 4 DCE though, I'm thinking that those would be the lost remover targets anyways.

Trainer/Supporter Analysis
With skyarrow bridge, I don't see why you need the heavy switch count, even with the heavy retreater terrakion.  2 switch and 4 junk arm should be more than enough.  The biggest card missing is the pokemon collector.  With a deck of basics, collector is important not only in helping you get your bench going early in the game, but to search out for pokemon at any point in the game.  While I typically recommend 4, since you can deal with a small bench early and by running pokegear, you could easily run 3.  To make room for these 3, I'd drop one switch, 1 juniper and 1 catcher.

Overall
This deck is something that every player needs to build, if for no other reason than to playtest against it.  It will be seen at the upcoming States tournament and is probably going to be a deck that will be around for a while.  This is an excellent build that I'm sure is already seeing great success in practice!  Good luck!