Firewall Deck #774761 — 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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Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±10 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 57 |
| Going First | 58 |
| Going Second | 63 |
| Meta Power | provisional |
| Tournament Reliability | 50 |
- Primary strategy: Control
- Secondary strategies: Toolbox
- 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: Link-5 or Link-6 Firewall Dragon (Darkfluid 3000 ATK / Singularity 3500 ATK) over a board kept clear by hand traps (Inferred); Transcode Talker (2300 ATK, Link-3) and Primathmech Xyz beats once the Mathmech engine connects (Inferred)
- Turn 1 (going first): Search with Cynet Mining or Backup @Ignister and hold Ash Blossom, Effect Veiler and Ghost hand traps for the opponent's first activations (Inferred)
- Turn 2 (going second): Hand trap the opponent's first board-building effect, then clear backrow or the field with Harpie's Feather Duster or Raigeki (Inferred)
- Recovery: Recur from the GY with Ghost Belle, Ghost Ogre and Mathmech Equation or Superfactorial; no verified recovery line exists (Inferred)
- After siding: None: the side deck is empty, so no post-side plan exists (Verified)
Why it scores here
The deck reliably opens a functional plan through its searchers: about 0.75 odds of at least one searcher-text card in a 5-card opener, with three copies each of Backup @Ignister and Cynet Mining as redundant starters. Its strongest scoring is interaction, with 14 hand traps and 15 negation-text cards layered across the opponent's turns, and this drives the going-second score. Conversion is held back by a split engine: Mathmech, @Ignister, Code Talker, Mulcharmy and Salamangreat cards share the Main Deck, and the Firewall name covers only 8.5 percent of it. The Extra Deck has a high Link ceiling, but there are no recorded boards, so both conversion and median output are text-only inferences. Popularity earned no points, and the score is not an average of card scores. The deck is Illegal (three Forbidden or over-limit copies), so the normal Final formula is withheld and the score is capped at 30 as a theoretical, structural-only read.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 60 | P(>=1 searcher-text card in opening 5) about 0.75 from the searcher group; Backup @Ignister x3 and Cynet Mining x3 are redundant starters, but 65 off-archetype copies split the engine (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 52 | 14 hand traps and 13 searchers compete for hand slots; P(>=1 hand trap in going-second 6) is 0.84, but several will be dead on going-first (Inferred) |
| D3 | Combo Conversion & Ceiling | 55 | No parseable boards; the ceiling is a text-only read of Link-5/6 Firewall Dragons (3000/3500 ATK) and Mathmech Xyz routes (Inferred) |
| D4 | Combo Floor & Median Output | 45 | No recorded boards, so median output is unknown; scored conservatively for the split Mathmech and @Ignister engines (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 58 | Three-copy Backup @Ignister and Cynet Mining, plus Effect Veiler and Ghost Belle recursion, give redundant lines after an interruption (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 55 | Ghost Belle and Ghost Ogre GY/hand effects plus Mathmech Equation and Superfactorial GY recursion; no resource telemetry exists (Inferred) |
| D7 | End-Board & Interaction Quality | 80 | 15 negation-text cards and 14 hand traps at 1-3 copies each, with layered quick-effect interaction (Verified text, Inferred semantic read) |
| D8 | Going-Second & Board-Breaking Power | 72 | Raigeki, Harpie's Feather Duster and Nibiru for board breaking, plus 0.84 going-second hand-trap coverage (Inferred) |
| D9 | Offensive Pressure & Closing Power | 68 | Firewall Dragon Darkfluid at 3000 ATK and Singularity at 3500 ATK on Link-5/6 bodies, and Transcode Talker at 2300 (Verified stats, Inferred conversion) |
| D10 | Main Deck Efficiency & Flexibility | 55 | 56 Main cards with 36 distinct and 20 tech cards; the over-limit Mathmech Circular and Triple Tactics Talent dilute density (Verified counts, Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 60 | 15 of 15 Extra slots used (12 Link, 2 Xyz, 1 Synchro), but Link Decoder is Forbidden, so one slot is illegal (Verified) |
| D12 | Side Deck Adaptability | 15 | The side deck is empty (0 of 15 allowed), so there is no post-side plan (Verified) |
| D13 | Matchup Coverage & Format Fit | 45 | No tournament link and no archetype meta-share; provisional only (Provisional) |
| D14 | Pilotability & Error Tolerance | 50 | Many hand-trap timing decisions, Mulcharmy empty-field conditions and split engine routing make the deck demanding to pilot (Inferred) |
How the score was computed
Strategy profile: Control. Structural ≈ 57, Going First ≈ 58, Going Second ≈ 63, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: Banlist exposure (-8); Engine conflicts (-2). Final formula: Illegal deck: normal formula withheld. Uncapped 0.80*Structural(57) + 0.20*TournamentReliability(50) + modifiers(-10) = 46; capped at 30 as theoretical/structural-only. Meta Power provisional (null).
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.75 · 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
- Layered interaction: 14 hand traps and 15 negation-text cards
- Searcher density (13 searcher-text cards) with redundant 3-copy starters Backup @Ignister and Cynet Mining
- High Link ceiling in the Extra Deck: Firewall Dragon Darkfluid (3000 ATK) and Singularity (3500 ATK)
Weaknesses
- Illegal list: 3 Triple Tactics Talent and 1 Link Decoder (Forbidden), plus 3 Mathmech Circular against a limit of 1
- Split identity: exact Firewall purity is 8.5 percent across Mathmech, @Ignister, Code Talker, Mulcharmy and Salamangreat
- Empty side deck, so no best-of-3 adaptation
- No recorded boards, so conversion cannot be verified
Critical choke points
- Mathmech Circular (3 copies, only 1 legal) is a core Mathmech search and summon route; removing the illegal copies collapses that line
- Backup @Ignister (3 copies) is the bridge that enables Extra-Deck summons for the @Ignister lines
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | 3x Triple Tactics Talent (Forbidden) | Legal main-deck replacement chosen by the owner | Forbidden cards make the deck Illegal; without them the list is legal on size. |
| 2 | 1x Link Decoder (Forbidden, Extra Deck) | Legal Extra Deck Link or Xyz card chosen by the owner | Forbidden in OCG; the Extra Deck slot must be legal. |
| 3 | 2x Mathmech Circular (keep 1) | Legal 1-copy or 2-copy card chosen by the owner | Limited to 1 copy; 3 copies run. |
| 4 | None | 1-3 side deck cards | The side deck is empty; a best-of-3 plan needs post-side options. |
Evidence & confidence
- Verified: Illegal status: Triple Tactics Talent (3) and Link Decoder (1) are Forbidden; Mathmech Circular runs 3 copies against a limit of 1; Main 56 and Extra 15 are within size rules; side deck is 0; Card stats and text as listed in the evidence
- Inferred: Searcher and hand-trap hypergeometric consistency estimates; Interaction density and layering read from card text; Going-first and going-second power estimates; Engine conflict and pilotability reads; Combo ceiling and median are text-only inferences (no boards)
- Provisional: Meta Power and matchup fit (no tournament link or dated meta sample)
- Data gaps: No recorded combos: combo ceiling, median and floor are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry for going-first/second, matchups or brick rates Meta Power is provisional without a dated metagame sample usage statistics lists S:P Little Knight as not in deck, but the card list shows 1 copy in the Extra Deck; the usage comparison may exclude Extra Deck cards No side deck, so post-side performance cannot be scored
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