First Turn Win | Unlimited Espeon

No, I am not joking here. With this strategy, you can cheese your way into winning on your first turn going first! The method to this is rather complex, so bear with me.

The first part is simple, but the most luck-based. If you're not already going first, open with Sableye to assure that you go first. I've minimized the number of other basic Pokemon in the deck to give the highest chance of opening with one. Mulligans shouldn't matter because if you successfully pull this off, your opponent

No, I am not joking here. With this strategy, you can cheese your way into winning on your first turn going first! The method to this is rather complex, so bear with me.

The first part is simple, but the most luck-based. If you're not already going first, open with Sableye to assure that you go first. I've minimized the number of other basic Pokemon in the deck to give the highest chance of opening with one. Mulligans shouldn't matter because if you successfully pull this off, your opponent would have lost before their first turn. If you're going first anyways, go for Unown or a Pokemon that has a free retreat cost, like Eevee or Porygon. 

Next, you want to check your starting hand. You want to get Broken Time-Space into play as fast as you can, as you want to get your Pokemon to evolve quickly. From there, you want to get all of your basic Pokemon into play, except for your other copies of Sableye, as it's not needed anymore. Use any other copies of it as discard fodder from now on. You have access to a ton of cards to help you search for what you need, so you shouldn't have many worries getting what you require. A complete bench would have Porygon, Eevee, and Unown on it. If any of what you need are prized, you have Rotom Dex and Hisuian Heavy Ball to help you out.

After, you want to evolve your Porygon. Its ability (well, Poke-Power) lets you effectively play a supporter card even if you're going first, so you can use it to play Lysandre's Trump Card and recycle all of your resources that you've used. Be mindful of the fact that when you play it, you need to have an out to keep going, because when testing, I've found myself running out of steam and bricking as soon as I play LTC. So, in order to prevent that, you can use Item Finder to give yourself the second half of Poke Drawer + or Misty's Wrath to get yourself going again. Now, back on track, as soon as you evolve one of your Pokemon, Eevee's ability activates, giving yourself a free Espeon. 

Now you're almost there! The last thing you need to do is evolve into Porygon-Z for its Crazy Code ability. It les you attach an unlimited amount of special energy cards from your hand to your Pokemon, so for this, I'm using Draw Energy. It lets you draw a card upon playing it (shocker), which contributes to Unown's HAND ability. Espeon lets you put an energy attached to one of your pokemon into your hand as often as you like, so I'm sure you see where I'm going with this. Repeat the process 35 times, get Unown into the active spot, use its ability, and win the game! (Note: I suggest playing an additional Lysandre's Trump Card before starting the combo so you have a full deck and don't draw yourself out. In order to play another LTC in the same turn, use Scoop Up Net to replay an Porygon2 and reresh its ability!) 

Now, just a little thing to say that the end, but I'd like to bring attention to the fact that this is my 100th deck posted onto the site, so I wanted to bring myself back to where I started: Unlimited cheese strategies. My first deck, while admittedly quite bad, is something I'm proud of. This deck, I'd like to say is at least 100 times better than that one, so I'll say this to leave things: Happy trolling!