Hello everyone,
I decided to put together an overview of Basic Box (also known as "Slop Box") and share my experiences with the deck so far.
The deck list
Play the list: View Carl Simpson’s complete 60-card Basic Box deck in the Lost Zone League Deck Builder.
Ever since Gardevoir rotated out of the format, I found myself searching for a deck to play during the 2026–2027 season. After moving away from Eevee Box, I wanted something that could consistently compete against Dragapult, which remains one of the most represented decks in the current metagame.
I initially tested both Hide ’n’ Sneak and Hop. While both decks looked strong on paper, I found they often struggled to recover from an Unfair Stamp. I also considered sticking with Joltik Box, as I had previously won a Cup with the deck after rotation. However, decks that rely heavily on Precious Trolley have a significant weakness to Budew, especially when the opponent chooses to go second. Unfortunately, it always seems like the best deck in the format starts with Budew whenever I play against it.
After discussing options with Baker and putting some serious thought into the format, I decided to give Basic Box a try.
What immediately attracted me to the deck was its versatility. Basic Box has access to multiple attackers that can be tailored to specific matchups, while its core draw engine of Mega Kangaskhan ex, Fezandipiti ex, and Teal Mask Ogerpon ex provides incredible resilience against hand disruption. Teal Mask Ogerpon ex also helps facilitate Energy acceleration, allowing the deck to pivot between attackers effectively throughout the game.
The list I’m currently piloting is based on the winning Baltimore Regional list, with changes including Prime Catcher, Jamming Tower, and a second Glass Trumpet. Although I've only been playing the deck for about a week and a half, extensive testing with friends along with ladder games helped me become comfortable with its play patterns very quickly. That preparation ultimately led to an undefeated run at the Pokémon Cup held at MNP Collectz in Fayetteville.
Before diving into the matchup breakdowns, I'd like to mention that my matchup estimates are based on a relatively limited sample size. While I have tested extensively, I don't yet have enough data to draw definitive conclusions across every matchup. These are simply my observations based on tournament experience, practice sessions, and ladder games. The ratios below are rough estimates from Basic Box’s perspective, followed by the opponent’s; they are not measured win rates. For example, 5/5 means roughly even.
Dragapult (5/5)
You almost always want to start with Mega Kangaskhan ex in the Active Spot, as it functions as your primary draw engine throughout the game.
Most Dragapult players will choose to go second in order to use Itchy Pollen, limiting your Item usage during your next turn. Because of this, prioritizing an early Ultra Ball to search out Meowth ex is extremely important. Unless you already have a Stadium in hand to answer Team Rocket’s Watchtower, I strongly recommend using Meowth's Ability to guarantee access to either Cyrano or Crispin for the following turn.
When using Cyrano, I typically search for up to three Pokémon from Lillie's Clefairy ex, Teal Mask Ogerpon ex, Wellspring Mask Ogerpon ex, Meowth ex, and Latias ex. This board state serves as the foundation for most matchups and gives you the flexibility necessary to navigate the game.
In the early turns, I usually begin attaching Energy to Wellspring Mask Ogerpon ex to set up a future Crispin turn. Even when anticipating an Unfair Stamp, the goal is to immediately begin a two-prize race by knocking out Budew and then targeting a Drakloak.
If your opponent has two Drakloak on the Bench, I always recommend using Torrential Pump on the Drakloak with Energy attached. Removing the Drakloak with Energy attached can make it harder for your opponent to answer Lillie’s Clefairy ex on the next turn. Still check their remaining attackers and Energy options before benching it; this does not guarantee protection from Boss’s Orders.
Enamorus is also a key attacker in this matchup, as it lets you take efficient knockouts while only giving up a single prize.
The Blaziken variant can be a bit trickier because Blaziken gives the Dragapult player a strong response to a Clefairy knockout. However, the matchup remains very manageable as long as you have access to Raging Bolt ex. Once Blaziken is removed, the Dragapult player is often forced to either attack with Dragapult or commit another Blaziken to the board.
More often than not, opponents will follow your second knockout with a Special Red Card. For that reason, I highly recommend establishing Fezandipiti ex beforehand to ensure you have enough draw power to find the resources needed for a return knockout.
Against the Dragapult/Dusknoir variant, the matchup becomes much easier if you're able to Torrential Pump for two prizes. If they respond by using Dusknoir, count the remaining Prize cards carefully. After you take another knockout on Dragapult ex, a further Dusknoir activation may hand you your final Prize card. The exact outcome depends on the board and whether either player meets another win condition at the same time.
Alakazam (4.5/5.5 - 4/6)
One of Basic Box's biggest weaknesses is its prize trade against single-prize decks, and Alakazam is one of the more popular examples of that archetype.
The outcome of this matchup is often determined during the opening turns. Your primary objective is preventing the Alakazam player from freely developing multiple Abra.
Iron Crown ex is incredibly strong here because it bypasses Shaymin's effects while threatening multiple Abra simultaneously. If Iron Crown is prized or if you're forced to go second, Wellspring Mask Ogerpon ex can serve a similar purpose, although it lacks the ability to ignore Shaymin.
If the Alakazam player manages to Rare Candy into Alakazam and take an early knockout, the combination of Mega Kangaskhan ex, Fezandipiti ex, and Crispin gives you a strong chance to immediately retaliate. Whether that means powering up Mega Kangaskhan ex through Energy Switch and Glass Trumpet or attacking with Lillie’s Clefairy ex, your goal is to answer the attacker and keep their setup under pressure. Use Iron Crown ex or Wellspring Mask Ogerpon ex when a Bench-damage line can remove multiple setup Pokémon; Mega Kangaskhan ex and Lillie’s Clefairy ex do not hit multiple targets.
At that point, they often need a Lana's Aid or another form of recovery to continue functioning properly.
If they fail to secure the return knockout, look for opportunities to use Ciphermaniac’s Codebreaking to put Special Red Card on top of your deck, then draw it with an available Ability. Special Red Card is playable only when your opponent has three or fewer Prize cards remaining; when that condition is met, it can disrupt their hand and help set up your final prizes.
Festival Lead (4.5/5.5 - 4/6)
Much like the Alakazam matchup, Festival Lead is heavily influenced by the early game.
Your priority should be taking quick Bench knockouts with either Iron Crown ex or Wellspring Mask Ogerpon ex, depending on the board state.
Another strong strategy is using Boss’s Orders to bring a Thwackey into the Active Spot, then using Wellspring Mask Ogerpon ex’s Sob to prevent it from retreating on the following turn. If your opponent cannot switch out of that position, you can develop attackers and look for a later Bench-damage opportunity. Boss’s Orders alone does not prevent retreat.
Combining this approach with Special Red Card, once its Prize condition is met, can potentially leave them without a meaningful follow-up, giving you the opportunity to close out the final prizes.
Hide ’n’ Sneak (4.5/5.5)
Whether or not your opponent is playing Dudunsparce ex significantly impacts how aggressively you should commit Pokémon ex to the board. Tenacious Tail does 60 damage for each Pokémon ex you have in play, so unnecessary Bench commitments can turn into easy knockouts.
Mega Kangaskhan ex is generally your preferred opening attacker provided your opponent doesn't immediately establish pressure with an early Dhelmise.
I typically begin by using Teal Dance and then determine whether Mega Kangaskhan ex or Lillie's Clefairy ex is the better initial attacker. In many games, leading with Clefairy helps prevent the opponent from jumping out to a three-prize advantage.
Dhelmise’s Vengeful Anchor reaches 170 damage when four or more Pokémon with Hide ’n’ Sneak are in the discard pile. That falls short of most of this deck’s undamaged Pokémon ex, but check Weakness and other damage modifiers: an opposing Lillie’s Clefairy ex can make Raging Bolt ex vulnerable through Fairy Zone.
Area Zero Underdepths gives you room to expand your Bench while a Tera Pokémon is in play, but weigh that against Dudunsparce ex. To remove a damaged Benched Pokémon, first use Energy Switch to move any Basic Energy you want to preserve. Then bench Chien-Pao and use Snow Sink to discard Area Zero Underdepths. If you have more than five Benched Pokémon, the Stadium’s departure lets you discard down to five, including the damaged Pokémon. Chien-Pao does not move or recycle Energy itself.
As long as your opponent isn't consistently finding Boss's Orders at the perfect time, the matchup is very manageable.
One additional note: avoid discarding Wellspring Mask Ogerpon ex or Iron Crown ex whenever possible. In the rare case your opponent benches multiple Poltchageist, those attackers can become extremely valuable.
N’s Zoroark ex (5.5/4.5 - 6/4)
This matchup is largely determined by how much disruption your opponent plays.
Lists featuring four Judge and four Team Rocket’s Watchtower can be particularly difficult to navigate, making resource management extremely important.
I recommend conserving your Stadiums unless absolutely necessary. Misusing them early can easily result in getting locked out of the game through repeated Team Rocket’s Watchtower pressure.
Once you identify the matchup, determine whether you need to establish Meowth ex early, similar to your approach against Dragapult.
When using Cyrano, I choose up to three Pokémon based on my existing board, prioritizing Teal Mask Ogerpon ex and Iron Leaves ex, with Latias ex or Meowth ex when needed. The broader setup can include two Teal Mask Ogerpon ex, but a single Cyrano only finds three Pokémon ex.
If given the opportunity, Wellspring Mask Ogerpon ex can establish a turn-two Torrential Pump and immediately start the two-prize race.
Before taking your second knockout, make sure Fezandipiti ex is already in play. This greatly improves your chances of recovering from a Special Red Card plus Team Rocket’s Watchtower combination and finding the resources necessary for your final knockout.
Sharks (5.5/4.5 - 6/4)
This matchup follows a very similar game plan to N’s Zoroark ex.
Your ideal attackers are Teal Mask Ogerpon ex and Iron Leaves ex. Mega Kangaskhan ex and Fezandipiti ex help you recover from Judge, but remember that Team Rocket’s Watchtower shuts off Mega Kangaskhan ex’s Ability. Preserve an answer to the Stadium; Fezandipiti ex and Teal Mask Ogerpon ex can still provide draw support while it is in play.
As long as you're able to maintain your draw engine and avoid being locked out of resources, the matchup generally feels favorable.
Cynthia’s Garchomp ex (provisional)
Shout-out to Rashon, but I'll be honest and say this matchup is largely theoretical on my end since I haven't had the opportunity to test it extensively.
From what I've observed, finding Jamming Tower within the first couple of turns is critical. Without it, Cynthia’s Power Weight attached to Cynthia’s Gabite makes it very difficult to begin the two-prize race through Torrential Pump.
One possible line is establishing an early Crispin into Lillie's Clefairy ex and targeting Cynthia’s Gabite before multiple Champion's Call activations allow the Garchomp player to fully develop their board.
A potential prize map could involve taking two prizes across early attacks with either Lillie's Clefairy ex or Wellspring Mask Ogerpon ex, following up with Teal Mask Ogerpon ex on a revenge knockout, and then setting up Iron Leaves ex for the final two prizes. With a Tera Pokémon in play, Glass Trumpet can recover Basic Energy onto Benched Colorless Pokémon; Energy Switch or Iron Leaves ex’s Rapid Vernier can then move that Energy where it is needed. Jamming Tower turns off Cynthia’s Power Weight, reducing the HP you need to overcome.
Ultimately, I believe the matchup may come down to keeping Jamming Tower in play so that Cynthia’s Power Weight cannot provide its HP bonus. Power Weight is a Pokémon Tool, not a Stadium.
Even though Fezandipiti ex is weak to Fighting-type attackers, it's still incredibly important because of how valuable it is against Unfair Stamp, Special Red Card, and Team Rocket’s Watchtower.
Against both Garchomp and Lucario variants, it may also be worth minimizing reliance on Mega Kangaskhan ex to avoid giving up an easy three-prize knockout.
Hydrapple (4.5/5.5 - 5/5)
The difficulty of this matchup depends largely on how consistently the opponent can establish Hydrapple while also timing an effective Unfair Stamp.
Conserve your Stadiums whenever possible so that you can continually bump Forest of Vitality and slow their setup.
Your primary attackers in this matchup are Lillie's Clefairy ex and Raging Bolt ex.
As long as the Hydrapple player continues attacking with Teal Mask Ogerpon ex, Lillie’s Clefairy ex can provide an efficient response if both Benches are large enough. Count Full Moon Rondo’s damage before committing; the knockout is not automatic.
Prior to taking major knockouts, try to establish Mega Kangaskhan ex, Fezandipiti ex, and Teal Mask Ogerpon ex to ensure you're able to recover from Unfair Stamp or Special Red Card.
If possible, save Prime Catcher for the late game. Pulling up a vulnerable support Pokémon such as Meowth ex can often provide the final prizes needed to close out the game.
Slowking (4.5/5.5)
With access to Prime Catcher, I believe this matchup is much closer than versions of the deck that previously relied on Hero's Cape or Unfair Stamp.
Whenever possible, apply early pressure with Wellspring Mask Ogerpon ex, especially if you see multiple Slowpoke on the board before they have fully evolved.
Taking early knockouts can significantly disrupt their setup and force awkward recovery turns.
Be mindful of Zeraora lines. I generally recommend conserving Night Stretcher and having access to a backup Latias ex whenever possible. Losing your mobility at the wrong time can be devastating.
Once you've reached your final three prizes, begin planning your endgame carefully. At that stage, the goal is usually to create a Prime Catcher or Boss's Orders line that enables Raging Bolt ex to secure your final knockout.
Closing Thoughts
One of the biggest strengths of Basic Box is its balanced matchup spread. Very few matchups feel unwinnable, and most games are ultimately decided by proper prize mapping, resource management, and understanding which attacker is needed for a particular situation.
I haven't had the opportunity to play the mirror match yet, but my expectation is that it will largely come down to who establishes the prize race first. Cards like Enamorus and Special Red Card can create crucial tempo swings and potentially turn otherwise even games in your favor.
These are simply my observations after my initial testing, ladder play, and tournament experience. As I continue to gain more reps with the deck, I'm sure some of these evaluations will evolve. For now, however, this approach has brought me success, and I hope some of these insights help other Basic Box players improve their understanding of the deck.
Thank you for taking the time to read this guide. I appreciate any feedback, additional matchup experience, or discussion from fellow players. Hopefully some of these observations can help inspire both new and experienced Basic Box pilots moving forward.