Mathmech

Master I from
mybodyisregi
on June 30th, 2025
cp-ur 780 + cp-sr 420
41 cards
PSY-Frame Driver
Effect Veiler
Dotscaper
2 copies
Maxx "C"
PSY-Framegear Gamma
3 copies
Ghost Ogre & Snow Rabbit
3 copies
Ash Blossom & Joyous Spring
Firewall Guardian
Mathmech Sigma
Mathmech Subtraction
Mathmech Diameter
3 copies
Mathmech Circular
3 copies
Firewall Defenser
2 copies
Parallel eXceed
3 copies
Nibiru, the Primal Being
3 copies
Cynet Mining
Mathmech Equation
3 copies
Small World
2 copies
Called by the Grave
Crossout Designator
3 copies
Infinite Impermanence
Mathmech Superfactorial
Cyberse Desavewurm
Enigmaster Packbit
2 copies
Primathmech Laplacian
Primathmech Alembertian
Salamangreat Almiraj
2 copies
Linguriboh
Link Decoder
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

Notable Changes From Season 41

Very similar list from last month

https://www.masterduelmeta.com/top-decks/master-i/may-2025/mathmech/mybodyisregi/cKZkz

A major change was Crystron and handtraps definitely matchup badly into them. There are very few ways to interact with Tristaros but it could be my lack of experience with the deck. Especially because it wasn't as frequent as Blue Eyes, I just accepted it was a lost matchup going 2nd if I didn't open a pair for Nibiru.

When Diameter goes to 3, I will likely play all 3 copies. Will update with a new build when I do! I've also thought of trying Primite engine for Leotron though I haven't decided what it would look like besides Roar, Leotron, and 3 Diameter.

Matchup Breakdown in Total (176 Duels; 95 Heads, 81 Tails)

Due to Tenpai's influence: 103 1st, 73 2nd

  • 27 Blue Eyes (%, W/R = 55%)
  • 15 SE Millennium (8.5%, W/R = 26%)
  • 15 Tenpai (8.5%, W/R = 53%)

Honorable mention: 12 Crystron (6.8%)

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Replays

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

I streamed most of my climb on my twitch: mybodyisregi

yt:

https://www.youtube.com/playlist?list=PLaFh6a-hf3oB5J9w5XBR-PfaD7UJ0-GW1

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