Mathmech

Master V from
NevGuy
on November 21st, 2025
cp-ur 930 + cp-sr 270
40 cards
3 copies
Effect Veiler
2 copies
Maxx "C"
3 copies
Ash Blossom & Joyous Spring
3 copies
Backup @Ignister
Firewall Guardian
Mathmech Addition
Mathmech Sigma
Mathmech Subtraction
Mathmech Diameter
3 copies
Mathmech Circular
3 copies
Firewall Defenser
3 copies
Mulcharmy Fuwalos
Wizard @Ignister
3 copies
Nibiru, the Primal Being
A.I. Connect
3 copies
Cynet Mining
Mathmech Equation
Called by the Grave
Crossout Designator
3 copies
Infinite Impermanence
Mathmech Superfactorial
Cyberse Desavewurm
Firewall Saber Dragon
Enigmaster Packbit
Primathmech Laplacian
Primathmech Alembertian
Allied Code Talker @Ignister
Linguriboh
Link Decoder
Cyberse Wicckid
Splash Mage
G Golem Crystal Heart
Transcode Talker
Decode Talker Heatsoul
Accesscode Talker
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

For some reason Mathmech lists on this website are addicted to playing awful garnets like Dotscaper and Microcoder. This list is focused on cutting as many bad draws as possible and adding maximum handtraps instead. Veiler is a flex spot, it could definitely be replaced with Droll, but I didn't like its anti-synergy with Fuwa and roach. Multiplication enables an easy OTK line with Terahertz, but that can be replaced by simply co-linking it to Crystal Heart. A strong deck for sure, but for now just play Maliss.

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