This is my list that I played at the Dutch Open (7-0-1 after swiss, 9-1-1 after finals).
4 Wailord Ex
1 Lugia Ex
1 Shaymin Ex
4 Team Flare Grunt
3 Pokémon Fan Club
1 Ace Trainer
1 Team Rocket's Handiwork
4 VS Seeker
4 Puzzle of Time
4 Max Potion
4 Rough Seas
4 Float Stone
2 Enhanced Hammer
2 Crushing Hammer
2 Trainer's Mail
1 Fighting Fury Belt
1 Captivating Poke Puff
3 Double Colorless Energy
To explain some of the techs, I'd first have to explain that the base strategy is to set up 3-4 Wailords with Float Stones (no good tool removal to remove these in standard) and Rough Seas, and rotating between Wailords so you can heal up to 90-120 damage every turn using Rough Seas in play. Meanwhile you try to disrupt with energy removal, Lysandre, Ace Trainer, Delinquent, N when they have 1 prize left, etc. Whenever you take a hit that puts Wailord in 2-Hit-KO range and you fear they might have the Lysandre/VS Seeker to go for that Wailord after you retreat it, you'd use Max Potion. This the most general overall strategy and gives you a lot of time to draw into your techs most of the time.
The techs I played:
Shaymin Ex: Looping Sky Return every turn helps deal with any deck that only sets up 1 attacker like Yveltal, Mega Gardevoir, Mega Mewtwo, Rainbow Road. The extra draw engine it gives the deck makes it easier to draw into double Puzzles, Grunts, VS Seeker. Putting down Shaymin + DCE before playing N ensures you have a DCE for another attacker on the next turn. 30 damage every turn starts to add up when are also trading resources with your disruptive cards.
Lugia Ex: Follow up on the chip damage Shaymin does. Since 30 a turn starts to add up during a drawn out game, Lugia can finish off threats like Mega Gardevoir, Yveltals, Xerneas, Mega Mewtwo. Last swiss round I ended up taking 6 prizes with Shaymin/Lugia, so that's also possible sometimes...
Wobbuffet: makes Vileplume decks an easy matchup and is great to get out on the first turn vs Mega Gardevoir since they will have to use Sycamores or Lysandre to draw cards.
Carbink: forces out Garbodor against Yveltal and Mega Mewtwo, giving you an easy Minccino + Lysandre target.
Now on to the 2nd dynamic duo (besides Shaymin & Lugia), Minccino & Hoothoot:
Minccino: deals with Float Stone, making Lysandre stronger to exhaust their retreating options, countering Garbodor, stopping Vulcanion Ex from easily retreating. Minccino + DCE + Lysandre, into Hoothoot on the next turn can stall out entire games. This is actually exactly what happened in the first game of the finals.
Hoothoot: mainly used to win the Volcanion matchup, whenever the game goes late and they get most of their energies in play with Power Heater, you can Lysandre + Hoothoot a Volcanion without energy to stall them out and lock them out of VS Seeker for Fisherman/Olympia, Float Stone, Escape Rope, Switch, Energy Retrieval. In combination with Captivating Poke Puff, you can use Hoothoot in any matchup to lock up something like Hoopa Ex, Dragonite Ex, 2nd Yveltal Ex with Lysandre + Hoothoot. particularly good after you clear some Float Stones off the field with Minccino.
Most important thing is to manage how many prizes you can give up while keeping control of the game.
Some notable cards that didn't make the cut:
Parallel City: handy against Rainbow Road and Mega Rayquaze, but I decided I wanted the 4 Rough Seas since the card is so key, and having 4 Rough Seas means you can recycle them with Delinquent while getting 2 activations off in 1 turn.
Escape Rope: cute to trick people with Minccino if they bring up something with a Float Stone, but playing Olympia over it because the re-usability in difficult spots is nice, and better vs Vileplume.
3th Enhanced Hammer: I was planning to play 3 Enhanced Hammers for the Yveltal matchup, but cut the 3th copy for Captivating Poké Puff, which seemed more usefull against Mega Gardevoir, Volcanion and Greninja.
Bunnelby: In practice this card turned out to be a 'win more' card, only being used when the game was already sealed anyway, and otherwise being a liability. Bunnely needs to go active to attack, while Team Rocket Handywork can be played while staying safe behind Wailords. We have Shaymin to break stalemates either way.
2nd Carbink: Forcing out Garbodor is great, and Carbink is the best wall against Mega Gardevoir and Garbodor based decks to waste time/resources on their first few turns.
GGs to Robin Schulz, who I played against in the finals. We were tied 1-1 when time ran out, and he had taken 3 prizes while I had taken 2, resulting in him winning.