NEXUS

Lore Archive

"The K9 unit deploys canine combatants trained for tactical operations. These loyal beast-warriors work in coordinated packs, using their keen instincts to track down and neutralize threats with military precision. Man's best friend has never been more dangerous."

Executive Summary: The Paradigm Shift

The introduction of K9-X "Ripper/M" in the Burst Protocol expansion represents a paradigm shift for the K9 archetype. Historically a reactive engine reliant on the fragile "Quinquery Lock" (Plan A), the deck has evolved into a high-velocity, interactive powerhouse centered on "Plan B": Reactive Annihilation.

With "Ripper/M" acting as a 0-Point boss monster in the Genesys Format, the deck can now deploy a non-targeting board wipe that negates monster effects, pierces through defense, and shuffles resources—all while leaving room for maximum "Power Staples."

The K9 Unit: Operatives & Toolbox

Main Deck Operatives

K9-04 Noroi
Missing: 47960073

K9-04 Noroi (Intel & Consistency)

The 1-Card Revolution. Beyond being a starter, Noroi allows you to look at the opponent's hand, providing the critical intel needed to time the K9-X Forced Release "nuke."

K9-ØØ Lupis
Missing: 91025875

K9-ØØ Lupis (The Protector)

CRITICAL Grants targeting protection to Xyz monsters using it as material. This makes "Ripper/M" immune to Infinite Impermanence and Effect Veiler, guaranteeing the board wipe resolves.

K9-66a Jokul
Missing: 28642461

K9-66a Jokul (Resource Engine)

Ensures the "Rank 5 per turn" consistency required for the new playstyle. Searches Noroi or Lupis and facilitates proactive board building.

Extra Deck Toolbox

K9-X "Ripper/M"
Missing: 31286915

K9-X "Ripper/M" (The Nuke)

The new Rank 9 Boss. Summoned via "Forced Release".

  • Offense: 3100 ATK with Piercing Damage.
  • Control: Shuffles 2 cards from GY/Banishment on summon.
  • Disruption: Detach 2 to negate a monster effect and destroy ALL cards on the field.

K9-17 "Ripper"
Missing: 27420823

K9-17 "Ripper"

The Rank 5 base. Still essential for searching "A Case for K9" and serving as the primary material ("ladder") for the "Ripper/M" summon.

K9-66X "Jacks"
Missing: 67515699

K9-66X "Jacks" (The Pop)

Used when a board wipe is overkill. "Jacks" provides spot removal and can also step up into Ripper/M if needed.

Protocol: "Plan B" Execution

The "Double Interruption" Sequence

This interaction condenses destruction, GY hate, and an omni-negate board wipe into a single Spell activation window.

K9-17 "Ripper"
Missing: 27420823
1

The Setup

End your turn with a Rank 5 (e.g., K9-17 "Ripper") with K9-ØØ Lupis attached as material. Set K9-X Forced Release.

K9-X Forced Release
Missing: 53792930
2

Activate & Destroy

On opponent's turn, activate Forced Release. Summon K9-X "Ripper/M" using the Rank 5. Destroy 1 card immediately upon resolution.

K9-X "Ripper/M"
Missing: 31286915
3

Shuffle & Nuke

1. Ripper/M triggers: Shuffle 2 opponent's GY/Banished cards into deck.
2. Quick Effect: When opponent activates a monster effect, detach 2 materials to negate it and destroy ALL cards on the field.

End Board Configurations

Plan B: Ripper/M Control

K9-X "Ripper/M"
Missing: 31286915
  • The Nuke: Quick Effect board wipe ready to resolve.
  • Protection: Untargetable via Lupis material.
  • Follow-Up: "A Case for K9" searches next turn starter if destroyed.

Plan A: The Floodgate

Spell Canceller
Missing: 84636823
  • Total Lockdown: "Spell Canceller" prevents all Spell cards.
  • Context: Use against Spell-heavy decks like Sky Striker or Runick where the Nuke is less effective.

Hybrids & Synergies

Vanquish Soul K9

The "Simultaneous Destruction" Loop.

  • The Interaction: Use Vanquish Soul, Start! (or similar protection) when Ripper/M nukes the field.
  • The Result: The board wipe resolves, destroying all opponent's cards, but your VS monsters survive due to the protection applying simultaneously.
  • Status: YCS Bologna Winner (Pierre Burgals).

Orcust K9

The Indestructible Board.

  • Dingirsu Synergy: When Ripper/M detonates, detach from Dingirsu, the Orcust of the Evening Star instead of destroying your board.
  • Result: One-sided Raigeki.

Interactive Combo Replays

Step through real K9 combo lines recorded from live duels. Use the controls to advance each step and watch the board come together.

Combo Guide
These combos may contain errors or use banned cards. If you spot an issue, submit a replay to help keep this guide accurate.
Know a better line? Submit a Replay
Loaded: The K9 Full Combo — Triple Gustav Max
BETA

The K9 Full Combo — Triple Gustav Max

Beginner Guide Available

An ambitious combo starting with K9-04 Noroi's Normal Summon, which searches and special summons K9-66a Jokul for an immediate Xyz Summon into K9-17 "Ripper". The line chains through K9-66b Lantern, Infinitrack River Stormer, Heavy Freight Train Derricrane, Revolving Switchyard, Flying Pegasus Railroad Stampede, and the Infinitrack engine to build toward a three-copy Superdreadnought Rail Cannon Gustav Max endboard supported by Clockwork Knight.

✨ Combo by TC May 3, 2026

Banlist Impact

SIGNIFICANT IMPACT: The K9 archetype faces significant restrictions on the TCG banlist with K9-04 Noroi forbidden. Additionally, 1 card is limited.

Archetype Cards

Forbidden

  • • K9-04 Noroi

Limited

  • • K9-66a Jokul

Synergistic Cards

Forbidden

  • • K9-04 Noroi

Limited

  • • K9-66a Jokul

Meta Implications: The loss of K9-04 Noroi significantly impacts the archetype's power level and consistency. Players will need to adapt their strategies accordingly.

Banlist Status Summary

+ analyzed • 4 total restrictions found • 2 archetype cards2 synergistic cards

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