Mathmech Deck #774762 — Yu-Gi-Oh! OCG
56 Main, 15 Extra, incl. Firewall Defenser x3, Mathmech Circular x3, Backup @Ignister x3. Created Oct 28, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/28/2026
Main Deck (56)
- Dotscaper x1
- Firewall Defenser x3
- Firewall Guardian x1
- Gatchiri @Ignister x1
- Mathmech Addition x1
- Mathmech Circular x3
- Mathmech Multiplication x1
- Mathmech Subtraction x1
- Maxx "C" x1
- Micro Coder x1
- Mulcharmy Fuwalos x2
- Mulcharmy Purulia x2
- Nibiru, the Primal Being x1
- Parallel eXceed x2
- Wizard @Ignister x1
- Cyberse Code Magician x1
- Ash Blossom & Joyous Spring x2
- Backup @Ignister x3
- Effect Veiler x2
- Ghost Belle & Haunted Mansion x2
- Ghost Ogre & Snow Rabbit x3
- Mathmech Diameter x1
- Mathmech Sigma x1
- A.I. Connect x1
- Crossout Designator x1
- Cynet Mining x3
- Harpie's Feather Duster x1
- Mathmech Equation x1
- Raigeki x1
- Salamangreat Sanctuary x1
- Triple Tactics Talent x3
- Triple Tactics Thrust x2
- Cynet Conflict x1
- Infinite Impermanence x2
- Mathmech Superfactorial x1
- Red Reboot x1
Extra Deck (15)
- Allied Code Talker @Ignister x1
- Cyberse Contract Witch x1
- Cyberse Wicckid x1
- Firewall Dragon Darkfluid - Neo Tempest Terahertz x1
- Firewall Dragon Singularity x1
- G Golem Crystal Heart x1
- Linguriboh x1
- Link Decoder x1
- S:P Little Knight x1
- Salamangreat Balelynx x1
- Transcode Talker x1
- W:P Fancy Ball x1
- Firewall Saber Dragon x1
- Primathmech Alembertian x1
- Primathmech Laplacian x1
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20± 8/ 100
Power Score
Structural
47
Reliability
38
Going First
45
Going Second
50
Deck — Deck Power Evaluation
Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 46.6 |
| Going First | 45 |
| Going Second | 50 |
| Meta Power | provisional |
| Tournament Reliability | 38 |
- Primary strategy: Combo
- Secondary strategies: Stun
- Format: ocg
Legality
Main 56 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).
Identity & game plan
- Win condition: Mathmech/Primathmech Extra Deck summons (Synchro, Xyz, Link) that convert into board pressure, with Primathmech Laplacian and Firewall Dragon Darkfluid as the likely end-boards; Hand-trap and negate-driven disruption that buys time for the Cyberse engine
- Turn 1 (going first): Open a Cyberse/Mathmech starter (Mathmech Diameter, Mathmech Sigma, Cynet Mining, Backup @Ignister) and search or summon toward a Link or Synchro extension; hold Ash Blossom or Ghost Ogre for the opponent's first activation
- Turn 2 (going second): Use hand traps (Ash Blossom, Ghost Belle, Effect Veiler, Infinite Impermanence) to slow the opponent's first board, then rebuild through Mulcharmy draws
- Recovery: Recur Mathmech monsters from the GY through Mathmech Equation and Mathmech Superfactorial, and rebuild with Cynet Mining and Micro Coder searches
- After siding: No Side Deck is registered (0 cards), so there is no post-side plan in the evidence
Why it scores here
The list is illegal in OCG: it runs three Triple Tactics Talent and one Link Decoder, both Forbidden, and three Mathmech Circular against a limit of one, so the score is capped and read as structural only. Structurally it has a real engine, with a large Cyberse and Mathmech core (archetype core group open-in-hand estimate about 0.93 on 5 cards) and a dense hand-trap and negate layer (14 hand traps, 15 negation-text cards) that protects the engine on both turns. Its weak points are the low exact-archetype purity (16.9 percent, 59 off-archetype copies), no combo boards to measure the median or ceiling, and no Side Deck, which leaves it without a post-side plan. Popularity and the archetype's usage statistics were not counted as power, and card scores were not averaged into the deck score.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 50 | P(at least one archetype-core card in 5 cards) about 0.93, but the key engine card Mathmech Circular is limited to one legal copy (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 40 | Many off-archetype tech and hand-trap cards (59 off-archetype copies, 16.9 percent exact purity) create dead draws on a going-first hand (Inferred) |
| D3 | Combo Conversion & Ceiling | 45 | No parseable combo boards, so the ceiling is a text-only read of Extra Deck summon routes (Inferred) |
| D4 | Combo Floor & Median Output | 40 | No recorded boards, so the median output is unmeasured and estimated from starter diversity (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 50 | 14 hand traps and several negate effects give multiple independent answers, but the main engine loses a copy to the Limited cap (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 45 | Searchers (Cynet Mining, Micro Coder, Backup @Ignister) and Mulcharmy draw effects refill the hand; there is no resource-signature data (Inferred) |
| D7 | End-Board & Interaction Quality | 60 | 15 negation-text cards and 15 removal-text cards give broad end-board interaction, with Harpie's Feather Duster and Crossout Designator both legal at one copy (Verified text, Inferred quality) |
| D8 | Going-Second & Board-Breaking Power | 55 | Raigeki and Harpie's Feather Duster plus hand-trap draws help against an established board when going second (Inferred) |
| D9 | Offensive Pressure & Closing Power | 50 | Primathmech Laplacian (2000 ATK), Firewall Dragon Darkfluid (3000 ATK) and Nibiru (3000 ATK) can close, but the deck has no recorded boards (Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 40 | 56 Main Deck cards across 36 distinct names with 16.9 percent exact-archetype purity and 20 tech cards dilute consistency (Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 50 | 12 Link, 2 Xyz, 1 Synchro in 15 Extra Deck slots give broad coverage, but Link Decoder is Forbidden (Verified legality) |
| D12 | Side Deck Adaptability | 10 | No Side Deck is registered, so there is no post-side adaptability to score (Verified) |
| D13 | Matchup Coverage & Format Fit | 40 | No dated metagame or tournament link is supplied, so the matchup fit is provisional (Provisional) |
| D14 | Pilotability & Error Tolerance | 35 | Multi-step Mathmech and Cyberse sequences with many decision points on each turn make the deck hard to pilot consistently (Inferred) |
How the score was computed
Strategy profile: Combo. Structural ≈ 46.6, Going First ≈ 45, Going Second ≈ 50, Meta = provisional, Tournament Reliability ≈ 38. Modifiers: Banlist exposure (Forbidden in-format) (-4); Limited key-card exposure (-2); Weak post-side plan (-2). Final formula: No reliable metagame, so Meta is provisional: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers = 0.80*46.6 + 0.20*38 - 8 = 36.9, then capped to 20 because the deck is Illegal (rubric Step 2). Score is the capped value, shown as theoretical/structural only.
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.93 · key two-card combo ≈ — · full-brick estimate ≈ — (all Inferred)
- Combo output: best PowerIndex —, median —, board-per-starter —
- Turn order: 0 going-first lines vs 0 going-second lines
Strengths
- Dense hand-trap and negate layer (14 hand traps, 15 negation-text cards)
- Broad Extra Deck coverage across Link, Xyz and Synchro routes
- Searcher density (13 searcher-text cards) supports a high chance of finding a starter
Weaknesses
- Illegal list: Forbidden cards and copy-limit violations
- Low exact-archetype purity (16.9 percent) with many off-archetype tech cards
- No Side Deck, so no post-side adaptation
- No combo data to confirm the median or ceiling
Critical choke points
- Mathmech Circular, the engine card, has one legal copy but three are run
- No legal Link Decoder or Triple Tactics Talent, so any line that depends on them is unavailable
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Triple Tactics Talent (3) and Link Decoder (1) | Legal Mathmech or Cyberse replacements from the Forbidden-free pool | Fixes the legality violations, which is a prerequisite for any normal score |
| 2 | Two of the three Mathmech Circular copies | One Mathmech Circular plus a second searcher or starter | Brings the engine card within its one-copy OCG limit |
| 3 | Off-archetype tech cards with low synergy | A Side Deck of 5 to 10 cards | A Side Deck is currently empty and gives no post-side plan |
Evidence & confidence
- Verified: Legality: 56 Main, 15 Extra, 0 Side; 3 violations (Triple Tactics Talent, Link Decoder, Mathmech Circular); Banlist status for every listed card, from the evidence; Archetype purity 16.9 percent (12 exact-name copies of 71)
- Inferred: Hand-trap and negate layer protects the engine on both turns; Starter access about 0.93 for the core group; Consistency and brick estimates from text and hypergeometric draws; Interaction quality from card text
- Provisional: Meta and matchup fit (no dated metagame sample)
- Data gaps: No combos supplied, so the floor, median and ceiling are text-only inference No tournament link, so archetype meta-share and pilot record are absent No win-rate telemetry exists in YGOVN No Side Deck registered Meta Power is provisional unless a dated metagame sample is supplied
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