Mathmech

Duelist Cup DLv. Max from
ufukcan6087
on September 28th, 2025
cp-ur 840 + cp-sr 330
45 cards
2 copies
Effect Veiler
Dotscaper
2 copies
Maxx "C"
3 copies
Ash Blossom & Joyous Spring
Firewall Guardian
Mathmech Addition
2 copies
Mathmech Sigma
2 copies
Mathmech Subtraction
Mathmech Diameter
3 copies
Mathmech Circular
3 copies
Firewall Defenser
2 copies
Mulcharmy Fuwalos
3 copies
Artifact Lancea
2 copies
Parallel eXceed
Nibiru, the Primal Being
Harpie's Feather Duster
3 copies
Cynet Mining
Mathmech Equation
2 copies
Lightning Storm
Triple Tactics Talent
Cosmic Cyclone
2 copies
Called by the Grave
Crossout Designator
3 copies
Infinite Impermanence
Mathmech Superfactorial
Cyberse Desavewurm
Enigmaster Packbit
Primathmech Laplacian
Primathmech Alembertian
Link Spider
Salamangreat Almiraj
Linguriboh
Link Decoder
Update Jammer
Splash Mage
Transcode Talker
Decode Talker Heatsoul
Accesscode Talker
Firewall Dragon Darkfluid - Neo Tempest Terahertz
Firewall Dragon Singularity

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

Firewall Mathmech list I built a long while ago that I slightly updated for this format.

Firewall engine rather than Spirits because I didn't want to shill out the URs.

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