The Best UNION ARENA TCG Decks Right Now (2026)
Looking for the best UNION ARENA deck to take with you to your next tournament?
I’ve compiled a list of the most meta relevant decks right now, starting with the current best decks in the format.
UNION ARENA typically boasts a surprisingly wide array of competitive decks. And while some decks innevitably take up a large amount of play share, currently the meta boasts a wide range of variety and strong options to choose from.
We’ll get into all of this and more below as we dive into the top UNION ARENA decks in the game right now.
#1 Yellow Sakamoto
In Yellow Sakamoto we have one of the strongest free-play characters introduced into the game so far: Raid Taro Sakamoto.
Taro Sakamoto (026)
UE19BT: SAKAMOTO DAYS • Super Rare
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At just four energy-cost, Sakamoto is a 5000 BP attacker with Impact. But that’s not all – he will also enable you to free-play a character from the top five cards of your deck so long as it is a yellow character with 3500 or less BP. When you factor in how strong many of the cards in this deck are that fit that threshold, however, you quickly begin to see how incredibly insane this strategy is. It’s like if you took the AAA Wunder and Gaius play, combined them, and made them aggro-friendly.
This deck is going to be insanely popular everywhere now that SAKAMOTO DAYS is officially released and doing well at tournaments. With an unprecedented combination of aggressive early game threats, defensive strategies (via the two-and-four-cost Sakamoto characters) and Snipe/Impact, Yellow Sakamoto has the potential to shakeup the meta.
#2 Purple Reze
Chainsaw Man is an excellent set with stunning cards, excellent theming, and powerful decks. Among these decks, they don’t get any better than the instant S-tier Purple Reze deck.
Not only is this deck a powerhouse removal deck with everything you could want – draw, AP restand, and a heavy closer – it also perfectly catches the vibe of the successful Chainsaw Man Movie that released in 2025.
Few decks can capture the zeitgeist of a beloved anime and feel so good while doing it, making Purple Reze the most likely deck to dominate the playing field.
Reze (031)
UE22BT: CHAINSAW MAN • Super Rare
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That being said, it’s not like the deck doesn’t have its own set of weaknesses. It will struggle into decks that can prevent BP reduction, while many others that prevent characters from being “chosen” will have some built-in protection.
At the end of the day, however, top tier decks aren’t just defined by strength alone – they’re also defined by the psychology of players. And players are absolutely going to love playing this powerful deck.
#3 Yellow Evangelion
4th place by Valdy at the Virginia Regionals ‘26-27
Despite taking a hit when it ported over to the English Version, Yellow Evangelion has proven it deserves its place at the top of the meta with many high profile tops since it came out. It’s a very strong, low-energy deck that looks to punish some of the other, more greedy decks out there by swinging hard and fast before they have a chance to set up for an arguably stronger late game.
Meanwhile, Yellow Evangelion has plenty of answers for removal decks, thanks to the four-cost Rei that is an absolute chore to hit with removal effects as it means just letting you recycle your draw producing Rei on impact.
While it has plenty of competition now versus when it essentially dominated the format, it’s still a reliable, and relatively easy-to-learn deck that consistently does well at the top tables.
#4 Red Kagurabachi
6th place by Rapi’s Husband at the Virginia Regionals ‘26-27
It’s really no wonder why Red Kagurabachi is one of the hottest UNION ARENA decks right now. It’s got an insane combination of power, removal, and versatility that makes it a standout in the current UNION ARENA competitive English scene.
Look no further than at Chihiro himself to get an idea of what makes this deck so strong.
Red Chihiro has Double Attack and 4000 BP removal baked into one card, making it something like a cross between Roy Mustang and Red Kenshin. He’s a bold character with a ton of power that could easily dominate the UNION ARENA English Version if left unchecked. To make matters worse, the deck also has a card akin to the starter deck Red Kenshin that pushes characters to the energy line, making Chihiro a solid counter to Gaius.
With powerful draw, card that mitigate the downside of discarding cards to activate effects, and a powerful Red Color Trigger in the form of Togo Shiba, Red Kagurabachi is going to set the tone for a while at least as one of the most dominant decks in the game.
#5 Purple Gaius
3rd place by Sylviie at the Virginia Regionals ‘26-27
While the Purple Gaius/Spear deck somehow made its way into the English Version unscathed, it wasn’t long before cuts hit it on both sides of the Pacific. While those cuts were enough to dethrone its near tier-zero deck status, they weren’t enough to take it out of the game entirely. Today, it still exists as one of the best decks, although considerably less overpowered than it was before the restriction that cut its key special and the six-cost Asuka from its wheelhouse.
Of course, this deck’s single strongest card and core mechanic rests on the seven-cost Evangelion Spear of Gaius – a character that is unlike anything we’ve seen before in the game.
While there are many powerful combos that can be pulled off with this powerhouse card, the strongest use case is arguably using it to rapidly flood the board with 4000+ BP characters.
Beyond Gaius’s built-in draw engine on the Raid, you have a plethora of other draw characters in this deck like the three-cost Misato, Mari, the AAA Wunder that lets you control your opponent’s board and search out powerful characters When Sidelined.
While not the meta-defining deck it once was, many are still finding ways to pilot this deck to the top.
Learn more about how to pilot Evangelion’s powerhouse deck via my Purple Gaius deck guide.
#6 Purple Saito
2nd place by Dyne at the Virginia Regionals ‘26-27
For the most part, when UNION ARENA players have been talking about Kenshin needing a ban, they’re usually talking about Red Kenshin, But here’s Purple Saito proving his relevance! There’s nothing particularly spicy about this deck in its build, but it’s still noteworthy for being a deck that many have been overlooking lately in favor of some of the newer toys to play with.
And really, it’s not hard to see why. While Red Kenshin has certain matchups it dominates and others it struggles with, Saito’s matchup spread is more even. Sure, it’s not massively dominant over any of the top tier decks in particular, but it sure isn’t bad into them, either.
This more even matchup spread is helping Saito rise to the top at the highest level of competition – a matchup spread that is made possible thanks to one of the strongest attackers in UNION ARENA: six-cost Saito.
Meanwhile, the six-cost Saito isn’t the only thing this deck has going for it. Indeed, you have a plethora of powerful draw effects, filtering, as well as secondary attackers to choose from, making this deck an absolute blitz of strategic power that can be a challenge for any deck to deal with.
#7 Red Kenshin
Red Kenshin has been a dominant force in the UNION ARENA meta ever since it came out. Thanks to the inclusion of the new fake zero-cost Yahiko, however, the deck has gotten even stronger – granting Red Kenshin players a strong stepper that works as both an attacker, a blocker, and an early game aggressor that your opponent can’t simply chump block for free.
Yahiko Myojin (092)
Union Arena Promotion Cards • Rare
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While this deck does focus on the typical, powerhouse aggressive strategies that are a trademark of red, it also has a massively strategic layer to it that makes it one of the higher-skill decks out there.
As a Kenshin player, you must be able to assess the board state beyond making an all-out attack: you need to discern the optimal time to push characters back to the energy line, and when to let them be sidelined.
Another thing going for Red Kenshin is its host of insanely powerful base BP characters. Their only drawback is that when they battle a character that character gets pushed to the energy line instead of sidelined. However, in many matchups, that’s actually a good thing. The beauty of Red Kenshin, however, is giving you the choice to shut that off. And the best way to shut it off is with your 2 AP cost Kenshin. It’s an incredibly versatile deck that is one-of-a-kind in the English version of the game.
#8 Shadow Army
1st place by Spencer – Peoria Regional
Last but certainly not least is the massively popular Purple Shadow Army deck – one that just made headlines by topping the Peoria Regional and piloted by Spencer Freeman.
I’ll admit that here is a deck that I did not see the full potential in right away when it first came out. Yet, as we reflect on the direction UNION ARENA is going, it’s not really all that odd this deck would be so strong. After all, it has one of the strongest free-play cards in the game thanks to Shadow Monarch, as well as the indomitable 12-cost Sung Jinwoo.
When played right, Shadow Army does what the best UNION ARENA decks do better than all the rest right now: rapidly fill up the board with characters that can easily be boosted to 4000 BP+ threats – all backed up by a powerful closer.
With a regional win now under its belt, I would not be surprised to see this powerhouse deck become an S-tier staple. Indeed, I would expect and plan for it.
These are the strongest decks in the game right now you should know about, but stay tuned as I will keep updating this list with even more strategies you can use to compete at your next UA store tournament as more sets enter the arena!
