FairyTale (Aromatisse / Yveltal EX / Mewtwo EX)

[Trevenant the Ghostly Tree]

Pokemon: 15

• 
  3 Spritzee XY
  3 Aromatisse
  1 Aegislash EX
  1 Charizard EX (Combustion Blast)
  1 Yveltal EX
  1 Mewtwo EX
  2 Xerneas XY
  1 Suicune PLB
  1 Kangaskhan EX
  1 M Kangaskhan EX

Trainers/Supporters/Stadiums: 35

• 
  3 Muscle Band
  4 Professor Juniper
  4 N
  2 Lysandre
  1 Lysandre's Trump Card
  3 Ultra Ball
  2 Colress
  2 Bicycle
  2 VS Seeker
  2 Pokemon Fan Club
  3 Max Potion
  4 Fairy Garden
  2 Skyla
  1 Computer Search

Energy: 10

• 
  6 Fairy Energy
  4 Rainbow Energy

Strategy:
It's simple, with Aromatisse, you can move Fairy/Rainbow energies around as often as you like. I put in 1-1 Kang as a Pyroar counter, and because of it's high HP and decent attack damage. I run Suicune as a Landorous/Donphan/Safeguard counter. I run 2 Baby Xerneas for energy acceleration, and a safeguard counter. I run Mewtwo as a Mewtwo counter, and because it can pile a lot of damage. I run Yveltal because I have Rainbow Energies and because it can pile ton of damage. I run 1 Combustion Blast Charizard for VirGen counter and possible Aegislash counter. I run Aegislash for Mighty Shield, and because Rainbow Energy can make Slash Blast more tougher.

Opinions? I am running this deck for Cities.

 

[Mora]

I feel like M Manectric could be the better Pyroar counter. Guaranteed to OHKO and you can accelerate Energy out of your discard. The Basic isn't bad to attack with either.

 

[Carpey]

Personally, I'd like to max out my Fan Clubs if I'm going to run them at all because they are most useful in the first and second turns. The 2 Bicycles would be a good thing to take out for 2 more Fan Clubs, because this kind of deck tends to keep a large hand. Other than that, your list looks good. You just might have to do a little scoping out before the tournament starts to see if you should add any different tech Pokemon.