Fiendsmith Deck #772459 — Yu-Gi-Oh! OCG

54 Main, 17 Extra, incl. Lunalight Gold Leo x3, Mulcharmy Fuwalos x3, Heavy Polymerization x3. Created Oct 21, 2026 by YGO Mod.

Deck Fiendsmith OCG

Created by: YGO Mod (20517634)

Created On: 10/21/2026

 
 


Official AI Deck Power Analysis
ComboConfidence: LowEvaluated Oct 22, 2026
40± 8/ 100
Power Score
Structural 57
Reliability 48
Going First 60
Going Second 60

Deck — Deck Power Evaluation

Final Contextual Deck Power: 40/100 (±8 · Confidence: Low)

Overall score Value
Structural Deck Power 57
Going First 60
Going Second 60
Meta Power provisional
Tournament Reliability 48
  • Primary strategy: Combo
  • Secondary strategies: Toolbox, Midrange
  • Format: ocg

Legality

Main 54 / Extra 17 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

  • Win condition: Lunalight Fusion boss pressure: Lunalight Liger Dancer (3800 ATK) and Sabre Dancer (3000 ATK) off Polymerization-type Fusion lines; Fiendsmith Link/Fusion boards (Desirae 2800 ATK, Agnumday, Sequence) when the Fiendsmith half of the engine goes live
  • Turn 1 (going first): Search a Fusion enabler (Luna Light Perfume, Lunalight Fusion, Heavy Polymerization) and build a Lunalight Fusion board; keep Droll and Ash Blossom for the first disruption
  • Turn 2 (going second): Hand traps (Ash Blossom, Ghost Ogre, Ghost Belle, Infinite Impermanence, Droll) to slow the opponent, then Fusion or Link into a boss that the opponent must answer
  • Recovery: Recur Lunalight monsters from the GY through Luna Light Perfume, Silver Hound and Black Sheep, and use Fiendsmith's Tract or Lacrima to rebuild the Link engine
  • After siding: Not evaluable: the deck runs no side deck (side_count 0)

Why it scores here

The score was built from the deck as one system, not by averaging card scores. The deck reliably opens a Lunalight search-and-Fusion line: P(at least one searcher-text card in a 5-card opening hand) is about 0.90, and P(at least one Lunalight-core card) is about 0.61, so the opening is likely functional on most draws (Inferred). Its interruption resilience is above average because it runs about 9 hand traps and disruption cards with multiple independent restart routes through the GY. Its closing power is the strongest part: Lunalight Liger Dancer and Sabre Dancer convert a single Fusion into a large board-breaking threat. However, the list is illegal: the Extra Deck is 17 cards against a 15-card limit, and Fiendsmith Engraver is run 2 copies against a limit of 1. Only 8 of 71 non-Main-Deck-plus-Extra cards carry the exact Fiendsmith name, and the deck mixes Lunalight, Fiendsmith, Mulcharmy and Polymerization pieces, so engine coherence is weaker than the Lunalight core suggests. No combo boards, tournament record or side deck exist, so the score is capped and labelled theoretical and structural-only; popularity did not earn points.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 62 P(at least one searcher-text card in opening hand of 5) is about 0.90; Lunalight core P(at least one) is about 0.61; two engines compete for resources (Inferred)
D2 Opening-Hand Quality & Brick Management 52 Copy histogram is 16 singles, 13 doubles and 4 triples; 9 hand traps and 10 tech cards add dead-card risk; 63 of 71 copies are off the exact archetype name (Inferred)
D3 Combo Conversion & Ceiling 62 No parseable boards; the Lunalight Fusion line reaches 3800 ATK boss boards on paper (Inferred, text-only)
D4 Combo Floor & Median Output 48 combos_evidence has 0 scored boards, so median output is an unverified text-only read (Inferred)
D5 Interruption Resilience & Route Redundancy 66 Ash Blossom, Ghost Ogre, Ghost Belle, Droll and Impermanence each restart the line; several GY recursion effects give independent routes (Inferred)
D6 Resource Economy, Recovery & Grind 58 Heavy Polymerization and multiple GY recursion effects support rebuild; Fabled Lurrie and Lunalight GY loops help grind; no resource telemetry (Inferred)
D7 End-Board & Interaction Quality 62 Eleven negation-text cards and Fiendsmith's Desirae negation add layered interaction; Impermanence and Droll cover fast effects (Inferred)
D8 Going-Second & Board-Breaking Power 64 P(at least one hand trap in going-second 6-card hand) is about 0.68; boss monsters break boards after Fusion (Inferred)
D9 Offensive Pressure & Closing Power 70 Liger Dancer 3800, Sabre Dancer 3000, Panther Dancer 2800 and Desirae 2800 give high end-board ATK in text (Verified stat, Inferred closing)
D10 Main Deck Efficiency & Flexibility 52 54 Main Deck cards within the 40-60 range but 33 distinct names with heavy off-archetype density and 3-copy staples; many slots are dead outside the engine (Inferred)
D11 Extra Deck Efficiency & Coverage 40 17 Extra Deck cards against a 15-card limit, so the list is over the Extra cap; fusion-heavy Extra with 9 Fusion, 4 Link and 4 Xyz (Verified count)
D12 Side Deck Adaptability 20 No side deck (side_count 0), so post-side adaptability cannot be credited (Verified count)
D13 Matchup Coverage & Format Fit 45 No tournament link and no dated meta sample; matchup fit is provisional (Provisional)
D14 Pilotability & Error Tolerance 40 Multi-step Fusion, Link and recursion lines with several decision points for the pilot; a complex deck to play correctly (Inferred)

How the score was computed

Strategy profile: Combo. Structural ≈ 57, Going First ≈ 60, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 48. Modifiers: banlist exposure (-3); engine conflicts (-3). Final formula: Illegal list: normal Final not computed. Structural 57.4 gives 0.80*57 + 0.20*48 = 55.2, minus modifiers -6 = 49.2, then capped to 40 as theoretical/structural-only because the deck is Illegal (Meta provisional).

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.9 · 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 searcher and recursion text gives a high chance of finding a playable Lunalight Fusion line
  • Hand traps and negation give layered interruption through the opening turns
  • Fusion Extra Deck reaches very high ATK boss monsters

Weaknesses

  • Illegal list: Extra Deck is 17 cards against a 15-card limit, and Fiendsmith Engraver is over its copy limit
  • Two engines (Lunalight and Fiendsmith) share few materials, so consistency suffers
  • No side deck, so post-side adaptability cannot be shown

Critical choke points

  • Fusion enablers (Lunalight Fusion, Luna Light Perfume, Heavy Polymerization) feed most boards; one lost Fusion route stalls the deck
  • Fiendsmith Engraver, the over-limit card, is the Fiendsmith search and Link enabler; trimming it to 1 copy weakens the Fiendsmith line
Priority Remove Add Reason
1 1 Fiendsmith Engraver (second copy) 1 legal non-Limited Lunalight or Fiendsmith card Restores copy-limit legality and reduces the Limited-card overlap
2 1 Extra Deck card (one Fiendsmith or Lunalight Fusion you rarely reach) 0 (no replacement needed) Brings the Extra Deck to the 15-card limit, which is required for a legal list
3 1 off-archetype tech (Mask of Restrict or Heat Wave) 1 Lunalight or Fiendsmith support card Raises engine coherence; the exact-name purity is only 11.3 percent

Evidence & confidence

  • Verified: Legality: Extra Deck 17 over limit 15; Fiendsmith Engraver 2 copies vs limit 1; Card counts and archetype spread from composition; Banlist statuses from the evidence restricted_cards list
  • Inferred: Hypergeometric draw odds (searcher, Lunalight core, hand traps); Dimension scores D1 to D14; Structural score and going-first and going-second estimates
  • Provisional: Meta power (no dated metagame sample); Matchup fit D13
  • Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: meta share and per-pilot match record are absent No win-rate telemetry exists in YGOVN Usage-statistics inconsistency: core_cards and missing_core mark Fiendsmith's Requiem, Fiendsmith's Sequence, Fiendsmith's Desirae and S:P Little Knight as not in this deck, but the cards list has each at copies 1 (extra zone). The engine read here follows the cards list. Deck title is null, so the deck is identified only by archetype and id No side deck supplied (side_count 0)

More OCG Info

Fiendsmith

Fiendsmith Breakdown

 
 

 

 

 

 

 

 
 

 

 
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