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.

Deck Firewall OCG

Created by: YGO Mod (20517634)

Created On: 10/28/2026

 
 


Official AI Deck Power Analysis
ControlConfidence: LowEvaluated Oct 31, 2026
30± 10/ 100
Power Score
Structural 57
Reliability 50
Going First 58
Going Second 63

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
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

More OCG Info

Firewall

Firewall Breakdown

 
 

 

 

 

 

 

 
 

 

 
https://metaduelist.com/
Top