Crystron K9

Rating Duels - 1798.11 from
hiohioYP
 on February 21st, 2026
cp-ur 1110 + cp-sr 360
40 cards
SR Rarity
2 copies
Droll & Lock Bird
UR Rarity
Maxx "C"
SR Rarity
Crystron Citree
UR Rarity
2 copies
Crystron Tristaros
R Rarity
Scrap Recycler
R Rarity
Crystron Smiger
N Rarity
Crystron Thystvern
UR Rarity
3 copies
Ash Blossom & Joyous Spring
UR Rarity
3 copies
Mulcharmy Fuwalos
SR Rarity
Crystron Sulfefnir
SR Rarity
3 copies
Crystron Sulfador
UR Rarity
3 copies
K9-17 Izuna
UR Rarity
2 copies
K9-66a Jokul
SR Rarity
K9-66b Lantern
SR Rarity
K9-ØØ Lupis
UR Rarity
Foolish Burial
UR Rarity
3 copies
Chaotic Elements
UR Rarity
3 copies
Crystron Inclusion
UR Rarity
3 copies
"A Case for K9"
UR Rarity
Called by the Grave
SR Rarity
K9-X Forced Release
UR Rarity
Dominus Impulse
N Rarity
Crystron Cluster
UR Rarity
2 copies
F.A. Dawn Dragster
UR Rarity
Crystron Eleskeletus
UR Rarity
Crystron Quariongandrax
UR Rarity
Tiras, Keeper of Genesis
R Rarity
Cyber Dragon Nova
SR Rarity
Infinitrack River Stormer
UR Rarity
K9-17 "Ripper"
R Rarity
K9-66X "Jacks"
SR Rarity
Vallon, the Super Psy Skyblaster
UR Rarity
Cyber Dragon Infinity
UR Rarity
K9-X "Werewolf"
UR Rarity
Divine Arsenal AA-ZEUS - Sky Thunder
UR Rarity
Clockwork Knight
UR Rarity
S:P Little Knight

Prerequisites

  • A registered Konami ID linked to your master duel game
  • Must login to Yu-Gi-Oh! Cards DB using the same Konami ID
  • If the Yu-Gi-Oh! DB website asks to login with Game Card ID just click "I don't have a game card ID" and fill some basic information to proceed

Export Guide

- Via the MDM extension (Recommended): Download on Firefox, or Chromium Browsers
For Chromium browsers (Chrome/Edge/Opera/Brave...etc) just click "Add to chrome" on the store page and it'll work on most if not all chromium browsers.
After using the extension, go to the Master Duel game => Main menu => Deck option => The Card database option at the top right corner => locate the deck you exported and copy it
Don't show this again
- Manually
  1. Click here to copy the export code
    2.
  2. Go to Yu-Gi-Oh! Cards DB and click My Deck => Add a Deck
  3. Once the deck page loads click Edit then do one of the following based on the platform your device is running:
    • (PC Only): Press F12 to open the DevTools window => Navigate to the Console tab in the window => Paste the export code => Hit Enter
    • OR (Other platforms/PC): In the address bar of the current tab remove the URL and type "javascript:" without the quotations then paste the export code, then if you're on mobile look for the *globe* icon and tap on it to run the code (Chrome only), for PC users just hit enter.
  4. The deck will save automatically
  5. Go to the Master Duel game => Main menu => Deck option => The Card database option at the top right corner => locate the deck you exported and copy it

Click here for a more detailed guide

Notes & Combos

Didn’t quite make it to 1800, but I managed a 10-win streak! Started playing around with K9 Crystron again around the 1730 range. It’s been a while since I used it, but it’s seriously so much fun!

I’m not super confident in the build yet, but if the starter count is fine, I’m wondering if going up to 42 cards and bumping Imperm to 3 might be the move…

Honestly though, I was mostly just going first and looping Sulfador.

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