6 Corners - MrUnicornturdify

4x Virizion
2x Kyurem
2x Victini (v-create)
2x Shaymin (celebration wind)
1x Zekrom
1x Cobalion
2x Terrakion
1x Mewtwo EX

Pokemon = 15

3x Pokemon Collector
3x Pokemon Catcher
3x Switch
2x Super Scoop Up
4x Eviolite
3x Pokegear 3.0
3x Professor Oaks New Theory
2x Professor Juniper
3x Junk Arm
2x Skyarrow Bridge
1x Super Rod 

Trainers/Supporters/Stadiums = 29

5x Grass Energy
4x Prism Energy
3x Rainbow Energy
4x Double Colorless Energy

Energy = 16

Strategy

If you don't already know how 6 corners operates, it can be a bit confusing.  It brings in 6 (or in this case 7) different pokemon with different energy types to tech for any situation you may run into.  It doesn't run any energy acceleration so it runs shaymin to keep the energy on the field before getting KO'd.

Pokemon Analysis

It's difficult to recommend different pokemon lines since it's so dependent on your play style.  I've noticed that many decks can safely run 3 virizion  and still consistently hit on it as a starter.  Zekrom may be a pokemon that you can easily take out since your other pokemon should be able to give you a good match-up in matches where zekrom would be ideal.

Energy Analysis

16 seems a bit high, so I'd aim to get this down to around 13.  Dropping one grass and 2 DCE should suffice.

Trainer/Supporter Analysis

I would max out your collector since it's the only way to search out any of your pokemon.  I feel that seeker is preferred to super scoop up, but perhaps even splitting those two cards between SSU and seeker would help out.  By reducing your energy, you should have more room for another junk arm and juniper which should give you more options with the deck.

Overall

I don't have many suggestions for your deck because it's already so well built!  It's something that I'd like to do a video review in the future if I can find the time.   Good luck at states!