Mathmech Diameter
Tuner Effect Monster
Mathmech Diameter is a Tuner Effect Monster (LIGHT/Cyberse, Level 4) with 1000 ATK / 1500 DEF. First printed in Rise of the Duelist (2020).
- Type
- Tuner Monster
- Attribute
- LIGHT
- Monster type
- Cyberse
- Level
- 4
- ATK / DEF
- 1000 / 1500
- Archetype
- Mathmech
- Banlist
- Unlimited in the TCG, OCG, and Master Duel
- TCG release
- 2020-08-06
- Printings
- 1
Card text
When this card is Normal Summoned: You can target 1 Level 4 Cyberse monster in your GY; Special Summon it, but it cannot activate its effects. A "Mathmech" monster that was Synchro or Xyz Summoned using this card on the field as material gains the following effect. ●Once per turn, during the turn this card was Special Summoned, when your opponent activates a card or effect (Quick Effect): You can negate that effect. You can only use each effect of "Mathmech Diameter" once per turn.
Approximate value
≈$0.25
A rough figure from recent listings (updated 2026-08-03), not a market value or official price. It varies a lot with printing, condition, edition, rarity, and grading. Check current listings below before buying or selling.
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Printings & rarities
| Set | Set code | Rarity | Release | Price* |
|---|---|---|---|---|
| Rise of the Duelist | ROTD-EN028 | Common | 2020-08-06 | $2.06 |
*Approximate, from recent marketplace listings, not market values.
Mathmech Diameter in other languages
| Japanese | 斬機ダイア |
| Korean | 참기 다이어 |
| Chinese | 斩机直径 |
| German | Mathemech Durchmesser |
| French | Diamètre Mathmech |
| Italian | Matemech Diametro |
| Spanish | Matemecha Diámetro |
| Portuguese | Mechamático Diâmetro |
