Firewall Deck #768127 — Yu-Gi-Oh! OCG

51 Main, 19 Extra, incl. Achichi @Ignister x3, Mulcharmy Fuwalos x3, Pikari @Ignister 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
ComboConfidence: LowEvaluated Oct 20, 2026
45± 12/ 100
Power Score
Structural 58
Reliability 50
Going First 60
Going Second 64

Deck — Deck Power Evaluation

Final Contextual Deck Power: 45/100 (±12 · Confidence: Low)

Overall score Value
Structural Deck Power 58
Going First 60
Going Second 64
Meta Power provisional
Tournament Reliability 50
  • Primary strategy: Combo
  • Secondary strategies: Toolbox
  • Format: ocg

Legality

Main 51 / Extra 19 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

  • Win condition: Link, Synchro, Xyz and Fusion boards built from the @Ignister and Cyberse engine, closing through Firewall Dragon Singularity, Light Dragon @Ignister and Allied Code Talker @Ignister (Inferred from card text); Toolbox interaction (Ash Blossom, Infinite Impermanence, Solemn Judgment, Maxx C) keeping the engine online (Inferred)
  • Turn 1 (going first): Open on Cyberse starters (Achichi, Pikari, Backup, Hiyari, Doshin) and search an @Ignister or A.I. spell/trap, then Link or Synchro summon toward a Link-3 or higher monster (Inferred)
  • Turn 2 (going second): Hold Ash Blossom, Droll and Lock Bird, Maxx C or Infinite Impermanence to slow the opponent, then rebuild the engine from the GY with Pikari, Hiyari or Mathmech Circular (Inferred)
  • Recovery: Recursion from the GY through Achichi, Pikari, Backup and Mathmech Equation, which the deck can repeat if the first board is stopped (Inferred)
  • After siding: Not applicable: the deck has no Side Deck, so there is no post-side plan (Verified)

Why it scores here

The deck has a real engine: the 19-copy @Ignister core gives about a 91% chance of at least one core card in a going-first opening hand (Inferred hypergeometric), so it usually opens a functional starter. Its interaction layer is dense, with 8 hand traps and 13 negation-text cards, which makes it hard to stop once it reaches the board, and the going-second hand-trap odds of about 66% help it challenge a set-up. Conversion and median output are not measured, since the deck has no recorded boards, so those scores rest on text reading and are Inferred. The list is scored as a system, not as an average of card scores, and it is not rewarded for the popularity of the Firewall and @Ignister names. The score is held down because the list is illegal in OCG: Link Decoder is Forbidden and the Extra Deck holds 19 cards against a limit of 15, so the result is theoretical and structural only, and the 14 dimensions carry low confidence.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 70 P(at least one core card in a 5-card opening hand) = 0.914 across 19 core copies; 2-card Cyberse starter bootstrap (Inferred)
D2 Opening-Hand Quality & Brick Management 55 13 tech and 8 hand-trap slots compete with the engine, and 25 distinct 1-copy cards raise the dead-card risk (Inferred)
D3 Combo Conversion & Ceiling 60 No recorded boards; ceiling read from text to Link-3 and higher summons with Firewall Dragon Singularity and Light Dragon @Ignister as payoffs (Inferred)
D4 Combo Floor & Median Output 45 No recorded boards; median output cannot be measured, so the score is a conservative text-only estimate (Inferred)
D5 Interruption Resilience & Route Redundancy 62 Several independent starters (Achichi, Pikari, Backup, Hiyari) and GY recursion give more than one route after disruption (Inferred)
D6 Resource Economy, Recovery & Grind 60 13 searcher-text cards and GY recursion through Achichi and Pikari, but few draw effects (Inferred)
D7 End-Board & Interaction Quality 75 8 hand traps and 13 negation-text cards, with several layered negates (Ash Blossom x2, Solemn Judgment, Red Reboot, Infinite Impermanence) (Verified card text, Inferred density)
D8 Going-Second & Board-Breaking Power 70 Going-second hand-trap odds of about 66% (Inferred hypergeometric); Droll and Lock Bird and Maxx C add extra disruption (Verified text)
D9 Offensive Pressure & Closing Power 65 Extra-Deck boss options such as Firewall Dragon Singularity at 3500 ATK and Light Dragon @Ignister at 2300 ATK (Verified stats, Inferred closing)
D10 Main Deck Efficiency & Flexibility 45 51 Main Deck cards inside the 40 to 60 range, but 25 one-off slots and 68 off-archetype copies lower the coherence; exact-name purity is 2.9% (Verified composition)
D11 Extra Deck Efficiency & Coverage 40 19 Extra-Deck cards exceed the OCG limit of 15, so the deck is illegal on this count; the link, synchro and xyz mix is broad (Verified legality)
D12 Side Deck Adaptability 10 No Side Deck is run (side 0), so there is no post-side adaptability (Verified)
D13 Matchup Coverage & Format Fit 40 No tournament link or dated meta sample; Firewall archetype share unknown (Provisional)
D14 Pilotability & Error Tolerance 40 Multi-step link and synchro lines across several sub-archetypes need a high error tolerance (Inferred)

How the score was computed

Strategy profile: Combo primary, Toolbox secondary (approximately 80/20 by judgment, not a formal blend). Structural ≈ 58, Going First ≈ 60, Going Second ≈ 64, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist exposure (-6); extra deck over size limit (-4); unverifiable combo evidence (-1). Final formula: Illegal deck, theoretical only: 0.80*Structural(58) + 0.20*TournamentReliability(50) = 56.4; then context modifiers total -11 gives 45. Meta Power provisional (null).

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.91 · key two-card combo ≈ — · full-brick estimate ≈ 0.09 (all Inferred)
  • Combo output: best PowerIndex —, median —, board-per-starter —
  • Turn order: 0 going-first lines vs 0 going-second lines

Strengths

  • Dense interaction: 8 hand traps and 13 negation-text cards
  • High starter access from the 19-copy @Ignister core
  • Extra-Deck boss options with high ATK
  • Going-second hand-trap odds around 66%

Weaknesses

  • Illegal in OCG: Link Decoder is Forbidden and the Extra Deck is over the limit
  • Low archetype purity: 2.9% exact-name, many sub-archetypes
  • No Side Deck
  • Many one-off tech and interaction slots

Critical choke points

  • Link Decoder must be removed before the deck can be played legally
  • Extra Deck must be cut from 19 to 15 or fewer cards
  • The Ignister engine depends on Cyberse starters being live in hand
Priority Remove Add Reason
1 Link Decoder (Forbidden in OCG, 1 copy) A legal Cyberse Link-1 or a non-Forbidden Link monster Removes the only Forbidden card and the illegal-copy violation
2 4 Extra-Deck cards (19 down to 15) None (the Main Deck stays at 51 cards) Restores the OCG Extra Deck limit and makes the list legal to play

Evidence & confidence

  • Verified: Legality: Link Decoder is Forbidden and the Extra Deck has 19 cards (limit 15); Copy limits: Ash Blossom and Super Polymerization 2 copies (Semi-Limited), Maxx C, Solemn Judgment, Red Reboot, Crossout Designator, Harpie's Feather Duster and Droll and Lock Bird 1 copy (Limited); Card text and stats for all listed cards; Archetype purity 2.9%
  • Inferred: Engine accessibility: 0.914 at least one core card in a 5-card opening hand; Interaction density and going-second hand-trap odds of about 66%; Ceiling and median scores from card text only; Primary strategy Combo with Toolbox secondary
  • Provisional: Meta Power (null, no dated metagame sample); Matchup and format fit (D13)
  • Data gaps: no combos supplied: combo floor, median and ceiling are text-only inference no tournament link: archetype meta-share and match record absent no win-rate telemetry in YGOVN for this deck Meta Power provisional: no dated metagame sample Deck has no Side Deck, so post-side performance cannot be assessed

More OCG Info

Firewall

Firewall Breakdown

 
 

 

 

 

 

 

 
 

 

 
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