Mathmech

Master I from mybodyisregi on March 31st, 2026
cp-ur 900 + cp-sr 420
41 cards
SR Rarity
2 copies
Droll & Lock Bird
SR Rarity
Micro Coder
UR Rarity
Maxx "C"
UR Rarity
3 copies
Ash Blossom & Joyous Spring
UR Rarity
3 copies
Backup @Ignister
R Rarity
Firewall Guardian
R Rarity
Mathmech Addition
SR Rarity
Mathmech Sigma
R Rarity
Mathmech Subtraction
R Rarity
Mathmech Diameter
UR Rarity
3 copies
Mathmech Circular
R Rarity
3 copies
Firewall Defenser
UR Rarity
3 copies
Mulcharmy Fuwalos
UR Rarity
3 copies
Mulcharmy Purulia
SR Rarity
Wizard @Ignister
UR Rarity
3 copies
Nibiru, the Primal Being
SR Rarity
A.I. Connect
SR Rarity
2 copies
A.I. Meet You
UR Rarity
Called by the Grave
UR Rarity
Crossout Designator
UR Rarity
3 copies
Infinite Impermanence
N Rarity
Mathmech Superfactorial
R Rarity
Cynet Conflict
UR Rarity
Cyberse Desavewurm
R Rarity
Firewall Saber Dragon
SR Rarity
Primathmech Laplacian
UR Rarity
Primathmech Alembertian
UR Rarity
Allied Code Talker @Ignister
UR Rarity
Salamangreat Almiraj
SR Rarity
Linguriboh
UR Rarity
Link Decoder
R Rarity
Cyberse Wicckid
SR Rarity
Splash Mage
SR Rarity
G Golem Crystal Heart
SR Rarity
Transcode Talker
UR Rarity
Decode Talker Heatsoul
UR Rarity
Accesscode Talker
SR Rarity
Firewall Dragon Darkfluid - Neo Tempest Terahertz

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

Notable Changes From Season 50

See below for last season's list:

https://www.masterduelmeta.com/top-decks/master-i/february-2026/mathmech/mybodyisregi/48alK

The list didn't change since I had no chance to experiment with Desires or AI Connect or W:P Fancy Ball. Conflict has been performing well!

Matchup Breakdown in Total (143 Duels; 82 Heads, 61 Tails)

Due to Tenpai/Striker/Mikanko influence: no change

  • 21 Vanquish Soul (14.7%, W/R = 47%)
  • 14 Dracotail (9.8%, W/R = 35%)
  • 12 Mitsurugi (8.4%, W/R = 58%)

Honorable Mentions: 10 Odion, Radiant Typhoon, & Yummy

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Replays

Follow me on Master Duel! ID: 122-966-180

Here's a playlist of my Season 51 climb: https://www.youtube.com/playlist?list=PLaFh6a-hf3oCBtkhB8ycgfNjXVlVoXdtn

twitch: mybodyisregi

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