Union Arena JJK Guide: Jujutsu Kaisen Best Decks (2026)

This Union Arena JJK guide covers the UE03BT set and its two headline finishers, Satoru Gojo and Sukuna.

Correction (2026-07-27): an earlier version of this guide described Domain Expansion as a 5-cost event that K.O.'s every character without a "Cursed Energy" trait, and built an entire deck archetype, turn-by-turn plan, and matchup guide around that effect. Neither the effect nor the "Cursed Energy" trait exist on the real card. The real UE03BT/JJK-1-034 Domain Expansion is a 3-energy Uncommon event that lets you switch up to two of your AP cards to active, an economy tool, not a board wipe. This guide has been rewritten below using only verified card text from the official Union Arena card list and TCGPlayer.

Before building a JJK list, it helps to understand how Impact attackers work, since both of the set's Super Rare finishers use Impact.

TL;DR: Union Arena JJK's real strength is two Super Rare finishers: Satoru Gojo (6-energy, 5000 BP, Impact 1, draws a card and discounts your next play) and Sukuna (6-energy, 4000 BP, Impact 1, bounces an opponent character on play). Domain Expansion (3-energy, Uncommon) is an AP-activation tool, not the board wipe earlier versions of this guide described. No official Union Arena win-rate tracker exists at the per-set or per-matchup level; treat any specific percentage you see elsewhere as a community estimate.

Union Arena JJK guide: quick answer

The set's two strongest cards are Satoru Gojo and Sukuna, both 6-energy Super Rare characters with an Impact (1) ability (bonus damage to the opponent player after a successful attack) plus a useful on-play effect. Build around them with real removal, Hollow Purple and Divergent Fist, rather than the fabricated "Cursed Energy board wipe" plan described in an earlier version of this guide.

Key Takeaways

• Domain Expansion (UE03BT/JJK-1-034, Uncommon, 3 energy) switches up to two of your AP cards to active. It is not a board wipe, and there is no "Cursed Energy" trait in the real card data.
• Satoru Gojo (UE03BT/JJK-1-012, Super Rare, 6 energy, 5000 BP): Impact (1), draws a card and discounts your next card by 1 AP cost when played.
• Sukuna (UE03BT/JJK-1-048, Super Rare, 6 energy, 4000 BP, Blue): Impact (1), bounces 1-3 opponent front-line characters when played (scales with Sukuna's Finger copies in your sideline). Note the real printed name is "Sukuna," not "Ryomen Sukuna."
• Hollow Purple (UE03BT/JJK-1-029, Rare, 5 energy) and Divergent Fist (UE03BT/JJK-1-062, Rare, 4 energy) are the set's real removal/bounce tools.
• No official Union Arena tracker publishes win-rate or matchup data at this granularity; treat any specific percentage as a community estimate, not a confirmed stat.

JJK rewards complex combo sequencing built around its domain mechanics.

Understanding Domain Expansion

Domain Expansion's real text (UE03BT/JJK-1-034, Uncommon, 3 Yellow energy, 1 AP cost) reads: "Choose up to two of your AP cards and switch them to active." Its Final trigger reads: "If you have 0 life, place the top card of your deck into your life area."

This is an AP-economy card, not a removal or board-wipe effect. Switching AP cards to active lets you use their abilities again sooner, which matters in a deck (like one built around Gojo, whose on-play effect discounts your next card's AP cost) that wants to chain AP-cost reductions and character effects across a turn. Run it as a tempo piece, not as the game-ending bomb an earlier version of this guide described.

Two real cards worth knowing alongside it:

Unlimited Void (UE03BT/JJK-1-028, 1 energy): When played, choose up to one character on your opponent's front line and switch it to resting; it stays resting through the start and end phases while this card is in play. It falls off if you don't have Satoru Gojo on your front line by the end of the Attack Phase, so it is a Gojo-specific lockdown piece, not a generic removal spell.

Hollow Purple (UE03BT/JJK-1-029, Rare, 5 Yellow energy, 2 AP cost, reduced to 1 AP if Satoru Gojo is on your field): Choose one character on your opponent's front line and place it into their removal area. This is the deck's real single-target removal, and it gets meaningfully cheaper once Gojo is out.

Gojo Control Decklist

Correction (2026-07-27): the decklist previously published here included cards that do not exist in the real UE03BT card list (Gojo Full Power, Cursed Technique Lapse, and Black Flash, which is a real card but belongs to the later EX04BT/Jujutsu Kaisen Vol.2 set, not UE03BT), misnamed cards ("Ryomen Sukuna" for the real "Sukuna"; "Todo Aoi" for the real "Aoi Todo"), a duplicated character listed twice under reversed name order ("Nanami Kento" and "Kento Nanami" as if they were different cards), and wrong cost/BP/ability text on nearly every entry. No independently sourced, verified tournament decklist for JJK Union Arena was available at the time of this update. Rather than publish another unverified 50-card list, here is what's confirmed real and worth building around, from the official Union Arena card list and TCGPlayer:

Key Card: Satoru Gojo (UE03BT/JJK-1-012, Super Rare, 6 Yellow energy, 5000 BP): Impact (1), and on play, draws a card and reduces the AP cost of your next card that turn by 1.

Confirmed finishers:

• Sukuna (UE03BT/JJK-1-048, Super Rare, 6 Blue energy, 4000 BP): Impact (1), and on play from the front line, bounces 1 opponent front-line character to hand (2 if you have 2-3 "Sukuna's Finger" copies in your sideline, 3 with 4+).

Confirmed support characters:

• Yuji Itadori (UE03BT/JJK-1-002, Uncommon, 1 Yellow energy, 2000 BP): passive Nullify Impact against the character it battles; trigger draws a card.
• Megumi Fushiguro (UE03BT/JJK-1-021, Rare, 3 Yellow energy, 3000 BP): on play, puts a character with 3 or less energy, 1 AP cost, and the [Shikigami] affinity from hand or sideline onto the field active.
• Nobara Kugisaki (UE03BT/JJK-1-043, Common, 1 energy, 1500 BP): draws a card, then places a card from hand into your sideline.
• Kento Nanami (UE03BT/JJK-1-052, Uncommon, 3 Blue energy, 3000 BP): on attack, mills your top card to sideline and may drop an opposing 1500+ BP character's power by 1000 until end of turn. A second printing (UE03BT/JJK-1-054, Super Rare, 4 Blue energy, 4000+ BP) has a Raid effect with a bonus if your deck is down to 15 cards or fewer.
• Aoi Todo (UE03BT/JJK-1-081, Super Rare): direct-damage attacks deal 2 instead of 1, gain 2000 BP until end of turn, and let you swap a character between your opponent's front line and energy line.

Confirmed events:

• Domain Expansion (UE03BT/JJK-1-034, Uncommon, 3 Yellow energy): switches up to two of your AP cards to active.
• Hollow Purple (UE03BT/JJK-1-029, Rare, 5 Yellow energy, 2 AP cost, 1 if Satoru Gojo is on your field): sends an opponent front-line character to their removal area.
• Divergent Fist (UE03BT/JJK-1-062, Rare, 4 energy): returns an opponent front-line character with 5000 or less BP to their hand (sidelines it instead if you have Yuji Itadori on your field).
• Unlimited Void (UE03BT/JJK-1-028, 1 energy): locks an opponent front-line character to resting as long as Satoru Gojo stays on your front line.

For exact copy counts, remaining rarities (Maki Zen'in and others also appear in this set), and current AP-cost math before building a full 50-card list, check the official card list at unionarena-tcg.com or TCGPlayer's UE03BT product pages directly.

GODEEPER: New to Union Arena and wondering how JJK fits compared to other IPs? The beginner guide explains the base rules and compares the IPs. Union Arena TCG Beginner Guide →

A tuned JJK list balances its combo pieces with consistent early plays.

Key Card Breakdown

Satoru Gojo (Super Rare, 6 energy, 5000 BP): The set's top power-curve finisher. Impact (1) adds bonus damage to the opponent player on a successful attack; his on-play effect draws a card and discounts your next card's AP cost by 1. No nullification/untargetable ability exists on the real card, correcting an earlier version of this guide. Check current TCGPlayer pricing before buying; Union Arena singles move fast and no fixed price holds for long.

Sukuna (Super Rare, 6 energy, 4000 BP, Blue): The real printed name is "Sukuna," not "Ryomen Sukuna." Impact (1) matches Gojo's, plus an on-play bounce that gets stronger the more "Sukuna's Finger" copies you have in your sideline. Check current TCGPlayer pricing before buying.

Domain Expansion (Uncommon, 3 energy): An AP-economy tool (switches up to two of your AP cards to active), not the board wipe an earlier version of this guide described. Inexpensive; a reasonable inclusion in a Gojo/Sukuna shell for the AP-tempo value, not as a game-ending bomb.

Hollow Purple (Rare, 5 energy, 2 AP / 1 AP with Gojo out): The deck's real single-target removal. Getting Gojo onto the field first makes this cheaper to fire.

Kento Nanami (Uncommon, 3 energy, 3000 BP / Super Rare, 4 energy, 4000+ BP): Two real printings exist under this one name order; an earlier version of this guide split them into two differently-named "cards." The Uncommon version chips power off a blocker on attack; the Super Rare version has a Raid effect that gets a bonus once your deck is down to 15 cards or fewer.

Mulligan Strategy

Keep a hand with at least 2 low-cost characters (Itadori at 1 energy, Nobara at 1 energy, or Megumi at 3 energy) you can play across the first few turns. Avoid keeping a hand loaded with both 6-energy Super Rares (Gojo, Sukuna) and nothing cheap to play before you can cast them. Specific JJK-deck mulligan heuristics beyond these general principles were not independently verified for this update and have been removed rather than repeated as unconfirmed fact.

Step-by-Step: Building Around Gojo and Sukuna

Step 1: Establish early board presence. Play Itadori (1 energy) and Nobara (1 energy) in the first couple of turns; both are cheap and Nobara replaces herself with a card draw.

Step 2: Develop mid-curve. Megumi (3 energy) can pull a cheap [Shikigami]-affinity character straight from your hand or sideline onto the field, and Kento Nanami's Uncommon printing (3 energy) starts chipping power off opposing blockers on attack.

Step 3: Clear a path with removal. Use Divergent Fist (4 energy) to bounce a problem character under 5000 BP, or hold Hollow Purple (5 energy, cheaper once Gojo is out) for a character you need gone permanently.

Step 4: Land a finisher. Once you can afford 6 energy, Satoru Gojo or Sukuna both hit the field with Impact (1) and a useful on-play effect (a card plus a discount for Gojo, a bounce for Sukuna). Domain Expansion is worth holding alongside them to switch an AP card back to active and re-use its effect the same turn.

Step 5: Close the game. With Gojo's Impact adding player damage on top of combat and Sukuna's bounce clearing blockers, repeated attacks from your finishers should close the game within a few turns once they're established.

No official Union Arena win-rate or turn-timing data is published, so this sequence describes what the real card text supports rather than a tested optimal line.

Matchup Guide

Union Arena's competitive scene is not yet large enough to have an official win-rate tracker at the per-matchup level. An earlier version of this guide gave specific favorable/unfavorable verdicts against Solo Leveling, Bleach, Dragon Ball Super, and InuYasha, all reasoned from a Domain Expansion board-wipe effect that does not exist on the real card. Those verdicts have been removed rather than replaced with new unverified claims. For matchup information, check community VOD reviews and tournament reports on r/UnionArena rather than relying on a fixed table here. JJK itself took first place at Bandai's July 31, 2026 Wave 1 regional, see our Union Arena current meta breakdown for the full official placement picture across every IP.

Budget Build

Budget JJK: Satoru Gojo and Sukuna, the deck's Super Rare 6-energy finishers, are the main expense. Building around cheaper Uncommon and Common characters (Itadori, Nobara, Megumi, the Uncommon Kento Nanami) plus Domain Expansion and Divergent Fist gets you a functional shell without either Super Rare; add Gojo and/or Sukuna as budget allows. Check the Union Arena card rarities guide to understand which rarity slots you can safely swap for budget alternatives, and check current TCGPlayer prices before setting a specific budget target, since Union Arena singles move fast.

Tips

Getting Satoru Gojo onto the field first is worth prioritizing: his on-play discount makes your next card cheaper that turn, and Hollow Purple and Unlimited Void both get more efficient (cheaper AP cost, or contingent on his presence) once he's out.

Save Domain Expansion for a turn where switching an AP card back to active lets you use its effect again immediately, rather than playing it reflexively. It's a tempo tool, not a game-ending play.

Sukuna's bounce effect scales with how many "Sukuna's Finger" copies you've put in your sideline, so track that count if you're running the card seriously rather than assuming a fixed bounce number.

Related Reading

• Union Arena Deck Building Guide: Build a 50-Card Deck: General deck-building fundamentals that apply before you specialize into JJK's specific cards.

• All Union Arena Sets: EN Release Schedule: Complete UA IP timeline

• Union Arena Solo Leveling Guide: Another EN-standard IP's confirmed cards and pricing

• Union Arena Bleach Guide: Another top EN-standard IP

• Union Arena vs One Piece TCG: For players choosing between games

• Union Arena Trigger System Explained: All Trigger Types: How Union Arena's trigger types work, relevant background for reading JJK's event and character cards.

Frequently Asked Questions

What does Domain Expansion actually do in Union Arena? It switches up to two of your AP cards to active (UE03BT/JJK-1-034, 3 Yellow energy, Uncommon). It is not a K.O. or board-wipe effect. Earlier versions of this guide and others online may describe a fabricated board-wipe version; the real card text is an AP-economy tool.

Does Satoru Gojo have a nullification or untargetable ability? No. His real on-play effect draws a card and discounts your next card's AP cost by 1, plus Impact (1) on a successful attack. No ability text on the card makes him untargetable or immune to events.

Is "Ryomen Sukuna" the correct card name? No. The card is printed as "Sukuna" (UE03BT/JJK-1-048). "Ryomen Sukuna" is the character's full name from the source manga/anime but is not how the Union Arena card is titled.

Is JJK good for tournament play long-term? Union Arena's mechanics reward tight sequencing generally, but no official Union Arena tracker publishes long-term competitive-viability data by set. Treat this as a general observation, not a confirmed stat.

Where can I find JJK Union Arena singles at fair prices? TCGPlayer for US buyers, CardMarket for European buyers. Satoru Gojo and Sukuna, the deck's Super Rare finishers, are the main expense; check current listings before buying since Union Arena singles pricing moves fast.

References

• Union Arena official JJK product page
• Official Union Arena card list (unionarena-tcg.com/na/cardlist), card-by-card verification for UE03BT
• TCGPlayer Union Arena UE03BT: Jujutsu Kaisen product listings, card text and pricing reference
• Reddit /r/UnionArena community
• Bandai Namco EN Union Arena standard format legal set list