Union Arena InuYasha Sesshomaru Deck Guide: Purple Build

This Union Arena InuYasha Sesshomaru deck guide sticks to what the cards actually say rather than a franchise-wide "archetype" that isn't printed on any card. Purple gets two real payoff pieces in this set, Sesshomaru and Naraku. UA50BT-009UA50BT-009Shop on TCGplayer is the headline: a 6-cost, 4500+ BP finisher that gets stronger the more you develop your board from the sideline.

TL;DR: The Purple InuYasha deck centers on Sesshomaru (UA50BT/IYS-1-009), a 6-cost, 4500+ BP Character who gains 500 BP and Impact (1) whenever you play a character from your sideline that turn, and who can cheat a cheap Purple character into play himself. Naraku (UA50BT/IYS-1-028) shares the color and adds resilience rather than disruption, he returns to hand instead of dying once enough cards are stacked beneath him. Cheap fillers like the Common Sesshomaru (004) and Kagura (016) hold the early turns. No InuYasha decklist has placed at an official Union Arena tournament yet, so treat any tier claim about this build as unverified.

Is the Sesshomaru deck worth building? (quick answer)

Worth building if you like a high-BP payoff plan and don't mind that InuYasha has no track record yet. Sesshomaru's 4500+ BP with Impact is a real threat once it lands, and Naraku gives the deck staying power against removal. What you don't get is a starter deck to buy into, InuYasha only released as the UE23BT booster pack, so every copy of Sesshomaru or Naraku you want has to come from singles or packs.

Key Takeaways

• Sesshomaru (UA50BT/IYS-1-009, SR) is the deck's real payoff: 6 cost, 4500+ BP, Purple, gains 500 BP and Impact (1) per sideline character played that turn
• Naraku (UA50BT/IYS-1-028, SR) shares Purple and adds resilience, not disruption, he returns to hand instead of dying once 2+ cards are stacked beneath him
• The cheap Common Sesshomaru (004, 1500 BP, 1 energy) and Kagura (016, 1500 BP, 0 energy) fill the early curve
• Kagura carries the Naraku's Faction trait and a card-filtering When Played effect
• No InuYasha deck has placed at an official Union Arena event yet, there is no tier or win-rate data to cite
• No InuYasha starter deck exists, everything comes from the UE23BT booster pack

How to build the deck step by step

1. Start with the two Sesshomaru copies. Run the Common (UA50BT/IYS-1-004) for a cheap 1500 BP body that adds itself to hand off its trigger, and the Super Rare (009) as your top-end finisher. Four copies of the SR is standard once you can afford it.
2. Add Naraku for resilience. UA50BT/IYS-1-028 is a 4-cost, 4000 BP body on its own, but its real value comes from its Activate: Main ability, once per turn you can place a Naraku's Faction or Shikon Jewel Shards card face-down beneath him. At 2 stacked cards he returns to hand instead of leaving the field when he'd otherwise die; at 3 or more, returning him lets you replay a cheap sideline card too.
3. Fill the 1-2 cost slots with Kagura. UA50BT/IYS-1-016 costs 0 energy and draws a card while filing one to your sideline When Played, and its trigger is also a Draw. She carries the Naraku's Faction trait that Naraku's ability wants underneath him.
4. Use Shikon Jewel Shards for AP tempo. This is a real 3-cost Purple Event (UA50BT/IYS-1-034), not the accumulating-counter mechanic some earlier coverage of this set invented. Its actual effect lets you switch up to two of your AP cards to active, and its trigger places a card into your life area if you're at 0 life as a last-second save.
5. Sequence toward the Sesshomaru turn. Play your cheap Purple bodies from hand normally in the early turns, but hold at least one small Purple character (3 or less required energy, 1 AP, no affinities) back so Sesshomaru's own When Played ability has something legal to cheat into play when he lands.
6. Fill the rest of the 50 with proven Purple pieces as you find them. The confirmed roster for UA50BT includes more Naraku-adjacent Characters (Kagura, Kanna, Hakudoshi, Kageromaru, Goshinki) and events tied to the set's darker cast; verify any card's exact color and text against the official card list before committing four copies to your build, since this guide only vouches for the specific cards named above.

The Common Sesshomaru and Kagura are the cheapest confirmed Purple pieces, both playable on turn one.

Sesshomaru key cards breakdown

Sesshomaru (SR). 6 energy, 1 AP, 4500+ BP. His Turn Effect (+500 BP and Impact (1) if you played a character from your sideline that turn) rewards the exact kind of sideline development Kagura and Naraku's recursion naturally generate. His When Played ability, cheating in a small Purple character with 3 or less energy and 1 AP from your sideline, means he isn't purely a top-end card, he can also refill your board the turn he lands.

UA50BT-028UA50BT-028Shop on TCGplayer Naraku (SR). 4 energy, 1 AP, 4000 BP. Read his ability carefully: it is a self-protection tool, not removal or hand disruption. The face-down cards beneath him need to be Naraku's Faction or Shikon Jewel Shards affiliated, and the payoff scales with how many you've stacked, 2 for basic resilience, 3 or more to also replay a cheap piece when he comes back.

Kagura (C). UA50BT/IYS-1-016, 0 energy, 1 AP, 1500 BP. Her When Played effect draws a card and puts one from your hand into your sideline, a real filtering tool for a deck that wants specific cards (like the small Purple pieces Sesshomaru wants to cheat in) available when it matters.

Common mistakes with this build

Don't play Naraku expecting him to disrupt your opponent's board or hand, his actual text protects himself, it doesn't touch anything the opponent controls. Don't dump every cheap Purple character from your hand in the first two turns either, Sesshomaru's When Played ability needs a small Purple character still sitting in your sideline when he lands, so holding one back on purpose is correct play. And don't build around a "3-archetype" InuYasha meta, Sesshomaru and Naraku are the same color and share a deck; there isn't a separate confirmed third Purple build.

Shikon Jewel Shards is a real 3-cost Purple Event card, not a counter that accumulates on your characters.

GODEEPER: Want the full mechanical breakdown before you build anything? The rules guide covers AP, Raid, and how the Energy Line actually works. Union Arena How to Play: Rules & Turn Flow Explained →

What we don't know yet

Be honest with yourself about what this deck can promise. There is no InuYasha result in Union Arena's official top-placing decks archive as of this writing, the set's competitive debut simply hasn't happened yet at a tracked event. That means no win rate, no tier placement, and no confirmed optimal card ratio exist for this build. Anything you read elsewhere claiming otherwise for InuYasha specifically should be treated with the same skepticism you'd apply to an unsourced claim in any TCG community, ask where the tournament result actually came from.

GODEEPER: Deciding whether InuYasha is worth buying into at all before the EN release? The buying guide covers box math and what to expect at launch. Union Arena InuYasha English Release: What to Buy in 2026 →

Frequently Asked Questions

Is there an official Sesshomaru starter deck in Union Arena? No. InuYasha's only English product is the UE23BT booster pack at $4.99 per pack, releasing August 14, 2026. No starter or trial deck was ever announced for this set.

What does the Sesshomaru card actually do? UA50BT/IYS-1-009 is a 6-cost, 4500+ BP Purple Character. It gains 500 BP and Impact (1) whenever you play a character from your sideline that turn, and its When Played ability cheats a small Purple character into play from your sideline.

What is Naraku's role in this deck? Naraku (UA50BT/IYS-1-028) shares Sesshomaru's Purple color. His real ability is resilience, stacking Naraku's Faction or Shikon Jewel Shards cards face-down beneath him lets him return to hand instead of dying, not disrupt the opponent.

Is this deck competitive right now? Unconfirmed. InuYasha has no results in the official top-placing decks archive as of this writing, so there is no win rate or tier data to point to yet.

What are the cheapest confirmed Purple cards? The Common Sesshomaru (UA50BT/IYS-1-004, 1500 BP, 1 energy) and Kagura (UA50BT/IYS-1-016, 1500 BP, 0 energy) are the cheapest pieces confirmed for this guide.

Related Reading

• Union Arena Deck Building Guide: Build a 50-Card Deck: The 50-card, 4-copy, single-IP rules this build follows.
• Union Arena Raid Mechanic Explained: How Sesshomaru and Naraku's Raid abilities actually work.
• Union Arena Trigger System Explained: The confirmed trigger types, including the Get trigger both Sesshomaru cards use.
• Union Arena Card Rarities Explained: How the C/U/R/SR/AP rarity tiers in this booster pack actually break down.
• Union Arena InuYasha EN Prerelease: What to Expect: What the first EN weekend looks like before wider release.

References

• Union Arena InuYasha official product page: confirmed rarity breakdown, price, and release date
• Union Arena official card list: card-by-card ability text for UA50BT
• Union Arena top-placing decks archive: official tournament results, checked for InuYasha entries
• TCGplayer Union Arena: singles pricing reference