Mathmech Diameter
Mathmech Diameter is a Tuner Effect Monster in the Mathmech archetype, first released in 2020 in Rise of the Duelist. It has 1 printing across 1 set (Common). ROTD-EN028 Common sells for about $0.39. In the TCG it is currently unlimited (3 copies).
Market price · TCGPlayer
Updated Oct 1, 2026
$0.39
Type
Cyberse
Level
4
ATK
1000
DEF
1500
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. <br>• 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. <br>You can only use each effect of "Mathmech Diameter" once per turn.
Appears in 1 expansion
Printings (1)
| expansion | Code | Rarity | Price | Buy |
|---|---|---|---|---|
| Rise of the Duelist | ROTD-EN028 | Common | $0.39 |
Mathmech Diameter: FAQ
How much is Mathmech Diameter worth?+
Mathmech Diameter currently sells for $0.39 on TCGPlayer. The exact value depends on the printing, rarity, edition and condition — scan the card with YuScan to see the price of your copy.
Which sets was Mathmech Diameter printed in?+
Mathmech Diameter appears in 1 set: Rise of the Duelist.
Is Mathmech Diameter legal in tournaments?+
On the current TCG Forbidden & Limited List, Mathmech Diameter is unlimited (3 copies).
What is the passcode of Mathmech Diameter?+
The 8-digit passcode printed on Mathmech Diameter is 17946349.
Mathmech
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