Firewall Deck #767703 — Yu-Gi-Oh! OCG

55 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Mulcharmy Purulia x3, Nibiru, the Primal Being x3. Created Oct 20, 2026 by YGO Mod.

Deck Firewall OCG

Created by: YGO Mod (20517634)

Created On: 10/20/2026

 
 


Official AI Deck Power Analysis
ToolboxConfidence: LowEvaluated Oct 20, 2026
38± 10/ 100
Power Score
Structural 52
Reliability 40
Going First 50
Going Second 55

Deck — Deck Power Evaluation

Final Contextual Deck Power: 38/100 (±10 · Confidence: Low)

Overall score Value
Structural Deck Power 52
Going First 50
Going Second 55
Meta Power provisional
Tournament Reliability 40
  • Primary strategy: Toolbox
  • Secondary strategies: Stun, Midrange
  • Format: ocg

Legality

Main 55 / Extra 15 / Side 0 — status: Illegal. 1 violation(s).

Identity & game plan

  • Win condition: Multi-engine boards: Ignister, Mathmech and Code Talker Link/Synchro/Xyz summons converting into 2000 to 3000 ATK boss monsters, with a Firewall Link-5 closer; Hand-trap and negation-driven disruption that stalls the opponent while the Extra Deck boards are built
  • Turn 1 (going first): Open a searcher (Backup, Achichi, Cynet Mining or A.I. Connect) to reach an Ignister or Mathmech starter, then link or synchro into a boss; hold hand traps for the opponent's first answer
  • Turn 2 (going second): Use the 19 hand traps (Ash Blossom, Infinite Impermanence, Effect Veiler, Nibiru, Droll and Lock Bird) to negate the opponent's starter, then rebuild from the hand
  • Recovery: Recur Link-3 or lower Cyberse monsters from the GY through Transcode Talker and Decode Talker Heatsoul style effects, and use the 11 searchers to refill
  • After siding: Not evaluable: the deck runs no Side Deck (side_count 0), so no post-side plan exists in this list

Why it scores here

This list is scored as a system and is capped low because it is Illegal: it runs 3 copies of Ash Blossom & Joyous Spring against a Semi-Limited limit of 2, so the normal Final Contextual score is theoretical only. Its consistency comes from a dense archetype-core group (18 copies, about 0.87 chance of at least one in a 5-card opening hand) and 11 searchers, but the 33 distinct Main Deck cards span at least five sub-engines (Ignister, Mathmech, Code Talker, Mulcharmy and PSY-Frame), with only 2 exact-name Firewall cards and 68 off-archetype copies, which raises brick and conflict risk. Interaction is the strongest area, with 17 negation-text and 16 removal-text cards and 19 hand traps giving about 0.93 chance of at least one hand trap in a going-second 6-card hand. No combo boards, tournament record, guides or Side Deck were supplied, so floor, median, ceiling and post-side scores are Inferred and carry wide bands. Popularity and archetype usage did not earn points, and no card scores were averaged into this result.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 55 P(at least one archetype-core copy in 5-card hand) ≈ 0.87 across 18 core copies, but the core is split across several sub-archetypes (Inferred)
D2 Opening-Hand Quality & Brick Management 45 19 hand traps and 22 tech cards with level-0 spells and traps compete for space; brick and dead-card risk is high with 33 distinct Main Deck cards (Inferred)
D3 Combo Conversion & Ceiling 40 No parseable combo boards; conversion ceiling is text-only inference from Link-3 and Link-5 summons and Synchro boss lines (Inferred)
D4 Combo Floor & Median Output 40 No recorded boards, so median output cannot be measured and is estimated low-to-moderate from the multi-engine spread (Inferred)
D5 Interruption Resilience & Route Redundancy 60 Dense hand-trap and negation text gives several independent responses to a single opposing play; recursion through Link GY effects adds route redundancy (Inferred)
D6 Resource Economy, Recovery & Grind 60 11 searcher-text cards and recursion effects refill the hand and GY well over a long round; no resource-signature data (Inferred)
D7 End-Board & Interaction Quality 70 17 negation-text and 16 removal-text cards, with Ash Blossom, Infinite Impermanence and Ghost Ogre providing layered interaction (Inferred semantic read; flags are verified)
D8 Going-Second & Board-Breaking Power 65 Hand-trap density gives about 0.93 chance of at least one hand trap in a going-second 6-card hand; no going-second combo split is available (Inferred)
D9 Offensive Pressure & Closing Power 55 Link-5 Firewall Dragon Darkfluid - Neo Tempest Terahertz and 2900 to 3000 ATK bosses give a closing threat, but the Extra Deck is only partly built around them (Inferred)
D10 Main Deck Efficiency & Flexibility 45 55 Main Deck cards, legal size, but 68 of 70 copies sit outside the exact Firewall name and 33 distinct cards dilute the core (Verified composition, Inferred consequence)
D11 Extra Deck Efficiency & Coverage 60 15 Extra Deck slots spread across 10 Link, 2 Synchro, 2 Xyz and 1 Fusion, with several Link-2 and Link-3 access routes and a Link-5 finisher (Verified composition)
D12 Side Deck Adaptability 10 No Side Deck is registered (side_count 0), so post-side adaptability is absent and scored as a flat floor (Verified gap)
D13 Matchup Coverage & Format Fit 50 No tournament link and no archetype meta share are present, so format fit is provisional (Provisional)
D14 Pilotability & Error Tolerance 40 Multiple engines, many hand-trap timing windows and Link material routing make the list hard to pilot consistently (Inferred)

How the score was computed

Strategy profile: Toolbox. Structural ≈ 52, Going First ≈ 50, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Illegal copy-limit violation (-10); Engine conflicts and archetype dilution (-2). Final formula: Illegal cap: 0.80*Structural(52) + 0.20*TournamentReliability(40) = 49.6, plus context modifiers (-12) = 37.6, rounded to 38; Meta Power provisional and excluded; theoretical/structural-only

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.87 · key two-card combo ≈ — · full-brick estimate ≈ 0.13 (all Inferred)
  • Combo output: best PowerIndex —, median —, board-per-starter —
  • Turn order: 0 going-first lines vs 0 going-second lines

Strengths

  • Dense archetype-core group (18 copies) gives high starter access
  • Strong interaction density with 19 hand traps and 33 negation or removal texts
  • Searcher density (11) supports resource refill
  • Legal Limited and Semi-Limited copy counts except the Ash Blossom overage

Weaknesses

  • Illegal: Ash Blossom & Joyous Spring at 3 copies against a limit of 2
  • No Side Deck, so no post-side plan
  • Five sub-archetypes dilute engine coherence (2.9 percent exact-name purity)
  • No parseable combo boards, so conversion and median are unmeasured

Critical choke points

  • Legality: the list must drop one Ash Blossom copy before it can be played
  • Starter access depends on the Ignister and Mathmech searchers, which are spread thin across sub-archetypes
Priority Remove Add Reason
1 One copy of Ash Blossom & Joyous Spring A legal-count replacement or leave the slot empty Restores legality; the deck cannot be played as built with three copies
2 Off-archetype tech cards that do not match the main engine Core Ignister or Mathmech starters and searchers Raises archetype purity and starter consistency without changing the interaction suite
3 None A Side Deck of 5 to 15 cards Side deck is empty, so post-side adaptability cannot be evaluated or improved

Evidence & confidence

  • Verified: Main Deck 55 cards, Extra Deck 15 cards, both inside size rules; Ash Blossom & Joyous Spring at 3 copies, legal limit 2 (over copy limit); Limited cards (Droll & Lock Bird, Harpie's Feather Duster, Mathmech Circular, PSY-Framegear Gamma, Solemn Judgment) each at 1 copy; Composition, archetype purity and role-tag counts
  • Inferred: Starter access from the hypergeometric archetype-core estimate; Interaction quality from negation and removal text; Brick risk from the level-0 spell and trap count and tech density; Going-second hand-trap density (about 0.93)
  • Provisional: Meta Power (no dated metagame sample); Format fit (no tournament link)
  • Data gaps: no combos supplied, so combo floor, median and ceiling are text-only inference no tournament link, so archetype meta-share and per-pilot record are absent no Side Deck, so post-side adaptability is unmeasured no win-rate telemetry exists in YGOVN, so going-first and going-second splits are Inferred Meta Power is Provisional unless a dated metagame sample is supplied deck title is null, so the deck is identified only by its archetype and id

More OCG Info

Firewall

Firewall Breakdown

 
 

 

 

 

 

 

 
 

 

 
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