Rainbow's Dueling Academia Master Cup

Published on August 17th, 2026 by RandomPl0x
Updated on August 17th, 2026

Tournament Information

Format

  • 47 Players
  • Single Elimination
  • 1 Deck
  • Best of 3

Top Decklists - Prize Support: $20 USD

1st Place – DeadTube

45 cards
Maxx "C"
3 copies
Ash Blossom & Joyous Spring
3 copies
Ghost Belle & Haunted Mansion
Mitsurugi no Mikoto, Kusanagi
Mitsurugi no Mikoto, Saji
3 copies
Mulcharmy Fuwalos
Ext Ryzeal
3 copies
Ice Ryzeal
Sword Ryzeal
3 copies
Mitsurugi no Mikoto, Aramasa
Dimension Shifter
Mitsurugi no Miko, Wousu
2 copies
Ame no Murakumo no Mitsurugi
Futsu no Mitama no Mitsurugi
2 copies
Ame no Habakiri no Mitsurugi
3 copies
Pre-Preparation of Rites
Bonfire
3 copies
Seventh Tachyon
2 copies
Mitsurugi Ritual
Mitsurugi Mirror
Mitsurugi Prayers
Called by the Grave
Mitsurugi Great Purification
3 copies
Infinite Impermanence
2 copies
Dominus Spark
King of the Feral Imps
Number 104: Masquerade
Evilswarm Exciton Knight
Tornado Dragon
Number 60: Dugares the Timeless
Ryzeal Detonator
Ryzeal Duo Drive
Eclipse Twins
Number 38: Hope Harbinger Dragon Titanic Galaxy
Number 90: Galaxy-Eyes Photon Lord
Divine Golden Shadow Dragon Dragluxion
Mereologic Aggregator
Dyna Mondo
I:P Masquerena
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

2nd Place – naruto uzumaki

40 cards
2 copies
Droll & Lock Bird
Maxx "C"
Adamancipator Researcher
Cartorhyn the Hidden Gem of the Seafront
2 copies
Beta The Electromagnet Warrior
3 copies
Ash Blossom & Joyous Spring
3 copies
Magnet Warrior Sigma Minus
Magnet Warrior Sigma Plus
Koa'ki Meiru Guardian
Epsilon The Magnet Warrior
3 copies
Mulcharmy Fuwalos
Magnet Warrior Omega Plus
2 copies
Duoterion
3 copies
Conduction Warrior Linear Magnum Plus Minus
Tellusion the Magna Warrior
Block Dragon
Jizukiru, the Star Destroying Kaiju
Nibiru, the Primal Being
3 copies
Subspace Battle
Triple Tactics Talent
3 copies
Magnet Bonding
Called by the Grave
3 copies
The Fallen & The Virtuous
Conduction Warrior Plasma Magnum
Flux Ochsenfeld
Albion the Branded Dragon
Naturia Beast
Ecclesia and the Dark Dragon
Baronne de Fleur
Evilswarm Exciton Knight
Gallant Granite
Dogurad, the Stonetrooper
Reprodocus
Aussa the Earth Charmer, Immovable
Cross-Sheep
Proxy F Magician
S:P Little Knight
Curious, the Lightsworn Dominion

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

3rd/4th Place – 7minute

40 cards
2 copies
Elfnote Power Patron
Maxx "C"
3 copies
Ash Blossom & Joyous Spring
Fallen of Albaz
Incredible Ecclesia, the Virtuous
3 copies
Mulcharmy Fuwalos
2 copies
Medius the Pure
2 copies
Fallen of the White Dragon
Bystial Magnamhut
Elfnote Fortuna
3 copies
Elfnote Lucina
3 copies
Elfnote Regina
3 copies
Elfnote Tinia
3 copies
Fydraulis Harmonia
2 copies
Theorealize
Artmage Vandalism -Assault-
Elfnotes: Welcome Home
2 copies
Super Polymerization
Called by the Grave
3 copies
The Fallen & The Virtuous
Elfnotes: Rhapsodia of Madness
Mudragon of the Swamp
Sprind the Irondash Dragon
Albion the Branded Dragon
Mirrorjade the Iceblade Dragon
The Dragon that Devours the Dogma
T.G. Hyper Librarian
Golden Cloud Beast - Malong
Black Rose Dragon
F.A. Dawn Dragster
Elfnote Seraphim Strelitzia
PSY-Framelord Omega
Chaos Archfiend
Ecclesia and the Dark Dragon
Baronne de Fleur
Despian Luluwalilith

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

3rd/4th Place – Waffles

40 cards
2 copies
Droll & Lock Bird
Maxx "C"
2 copies
Ash Blossom & Joyous Spring
3 copies
Sky Striker Ace - Raye
2 copies
Sky Striker Ace - Roze
3 copies
Upstart Goblin
Reinforcement of the Army
2 copies
Pot of Desires
3 copies
Sky Striker Mobilize - Engage!
3 copies
Triple Tactics Talent
2 copies
Sky Striker Special Maneuver - Lemnisgate!
Called by the Grave
3 copies
Sky Striker Mecha - Widow Anchor
2 copies
Forbidden Droplet
3 copies
Sky Striker Mobilize - Linkage!
2 copies
Radiant Typhoon Vision
3 copies
The Fallen & The Virtuous
2 copies
Forbidden Crown
Albion the Branded Dragon
Ecclesia and the Dark Dragon
Super Starslayer TY-PHON - Sky Crisis
3 copies
Sky Striker Ace = Zero
3 copies
Sky Striker Ace - Kagari
Sky Striker Ace - Shizuku
Sky Striker Ace - Hayate
Prototype Sky Striker Ace - Amatsu
Sky Striker Ace - Zeke
Sky Striker Ace - Azalea
Sky Striker Ace - Camellia

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

Top 8 – Jake

Top 8 – Visas

Top 8 – Kiinzin

Top 8 – enqikoi

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