Fiendsmith Deck #772236 — Yu-Gi-Oh! OCG

57 Main, 15 Extra, incl. Cooky☆Yummy x3, Lollipo☆Yummy x3, Marshmao☆Yummy 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
ToolboxConfidence: LowEvaluated Oct 22, 2026
35± 8/ 100
Power Score
Structural 49
Reliability 40
Going First 52
Going Second 58

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±8 · Confidence: Low)

Overall score Value
Structural Deck Power 49
Going First 52
Going Second 58
Meta Power provisional
Tournament Reliability 40
  • Primary strategy: Toolbox
  • Secondary strategies: Midrange
  • Format: ocg

Legality

Main 57 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

  • Win condition: Extra Deck beaters and Fiendsmith Fusion/Link threats (Fiendsmith's Desirae, Armades, Mudragon) reached through Fiendsmith and Yummy starters; not a recorded combo line (no boards in evidence).; Negation-heavy grind: hand traps and Solemn/Dominus protect a Link or Fusion board once it lands.
  • Turn 1 (going first): Open a LIGHT Fiend/Yummy starter (Fiendsmith's Tract or Fiendsmith Engraver for searches, Lacrima the Crimson Tears or Yummy monsters for summons) and build a Link or Fusion board; hold a hand trap for the opponent's first activation.
  • Turn 2 (going second): Use a hand trap (Ash Blossom, Ghost Belle, Ghost Ogre, Droll & Lock Bird) or Dominus Purge/Solemn on the opponent's starter, then rebuild from the remaining hand and Extra Deck.
  • Recovery: Recover through Mulcharmy Fuwalos/Purulia draws, Ghost Belle and Ghost Ogre GY/hand effects, and Fiendsmith GY recursion via Lacrima and Fiendsmith's Sequence.
  • After siding: Not applicable: the side deck is empty (0 cards), so no best-of-3 adaptation is available.

Why it scores here

The deck is scored as a system, not as an average of its cards. Its engine is accessible at roughly 63% for at least one archetype-core card in a 5-card opening hand (Inferred), but the list is an unfocused mix of Fiendsmith, Yummy, Mulcharmy and generic staples (exact-name purity 8.3%), which lowers opening-hand quality and brick control. Interaction is the strongest area: 14 hand traps, 19 negation-text cards and 23 removal-text cards give dense answers that score well for both going first and going second. Without any recorded boards, the combo ceiling and median output are text-only inferences and are scored low. The list is Illegal (Marshmao☆Yummy at 3 copies against a limit of 1; Ash Blossom at 3 against a limit of 2), so the structural score is capped and the result is theoretical only. Popularity of the Fiendsmith archetype did not earn points, and no side deck means no post-side adaptability.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 58 P(≥1 archetype-core card in opening hand of 5) ≈ 0.63 across 10 copies; core Fiendsmith Extra Deck threats are present but Fiendsmith's Lacrima is absent (Inferred)
D2 Opening-Hand Quality & Brick Management 45 14 hand traps plus 22 tech cards and 66 off-archetype copies create a high risk of conflicting or dead hands; P(hand trap in 6 cards going second) ≈ 0.83 (Inferred)
D3 Combo Conversion & Ceiling 40 No parseable combo boards; ceiling is a text-based read of Fiendsmith Extra Deck summons and Yummy board effects, so this is unverified (Inferred)
D4 Combo Floor & Median Output 35 No recorded boards, so median and power distribution are unknown; set low to reflect uncertainty (Provisional)
D5 Interruption Resilience & Route Redundancy 55 Several independent interaction and recovery routes: Ash, Ghost Belle, Ghost Ogre, Droll & Lock Bird and Mulcharmy draws; redundancy is real but overlaps in purpose (Inferred)
D6 Resource Economy, Recovery & Grind 50 Draw and recovery text from Mulcharmy Fuwalos, Mulcharmy Purulia, Garura and Witch of the Black Forest; no netCardAdvantage data (Inferred)
D7 End-Board & Interaction Quality 70 19 negation-text and 23 removal-text cards, with Solemn Judgment, Solemn Warning, Dominus Purge and Ash Blossom providing layered answers (Inferred semantic read, Verified text)
D8 Going-Second & Board-Breaking Power 60 Going-second hand traps and Dominus Purge/Solemn answer an established board; no going-second split data exists (Inferred)
D9 Offensive Pressure & Closing Power 55 Extra Deck beaters reach 2300–2800 ATK (Fiendsmith's Desirae 2800, Armades 2300, W:P Fancy Ball 2400); no end-board data (Verified stat, Inferred closing)
D10 Main Deck Efficiency & Flexibility 40 57 main cards with 31 distinct cards and 22 tech slots; many off-archetype and single-purpose cards lower coherence (Verified composition, Inferred efficiency)
D11 Extra Deck Efficiency & Coverage 50 All 15 Extra Deck slots are used, including several off-archetype Link monsters (Linkuriboh, Artemis, Yummy★Snatchy); core Fiendsmith Extra Deck cards are present (Verified count, Inferred flexibility)
D12 Side Deck Adaptability 5 Side deck is empty (0 cards), so no best-of-3 adaptation exists (Verified)
D13 Matchup Coverage & Format Fit 45 No tournament link and no dated metagame sample; archetype meta-share is absent (Provisional)
D14 Pilotability & Error Tolerance 40 Multiple archetype engines (Fiendsmith, Yummy, Mulcharmy) and many hand-trap timing decisions create a high decision load (Inferred)

How the score was computed

Strategy profile: Toolbox. Structural ≈ 49, Going First ≈ 52, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: banlist exposure (-12). Final formula: Illegal: theoretical/structural-only. 0.80*Structural(49) + 0.20*TournamentReliability(40) = 47.2, then modifier -12 (banlist exposure) = 35; Meta Power provisional/null.

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.63 · 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

  • 14 hand traps and 19 negation-text cards give dense interaction on both turns
  • Fiendsmith Extra Deck threats (Desirae, Requiem, Sequence) are present and reach 2300–2800 ATK boards
  • Two Fiendsmith Tract/Engraver searchers provide a consistent starter route (Inferred)

Weaknesses

  • Illegal list: Marshmao☆Yummy over the copy limit (3 vs 1) and Ash Blossom over its limit (3 vs 2)
  • Low archetype purity (8.3%) and 66 off-archetype copies create conflicting engines
  • No side deck, so no best-of-3 adaptation
  • No combo or board evidence, so ceiling and median are unverified

Critical choke points

  • Single-copy Limited Fiendsmith Engraver and Fiendsmith's Tract: losing either removes the main searcher route
  • Limited Solemn Judgment and Droll & Lock Bird: one copy each, so a single loss removes that interaction
Priority Remove Add Reason
1 2 copies of Marshmao☆Yummy A copy-legal replacement (1 copy maximum of Marshmao☆Yummy) Restores legality; the deck cannot receive a normal score while over the limit.
2 1 copy of Ash Blossom & Joyous Spring A non-Semi-Limited hand trap or a second copy-legal interaction card Brings Ash Blossom to its 2-copy limit.
3 Off-archetype tech cards with low synergy (e.g., Witch of the Black Forest, Santa Claws) Additional Fiendsmith or Fiendsmith-compatible starters, or a 1–3 card side deck Improves purity and gives post-side adaptability.

Evidence & confidence

  • Verified: Main 57 and Extra 15 are within size rules; Marshmao☆Yummy copy limit violation (3 vs 1); Ash Blossom copy limit violation (3 vs 2); Side deck is empty; Exact-name archetype purity 8.3%
  • Inferred: Opening-hand starter access ≈ 0.63; Brick and hand-trap conflict risk; Interaction density reads as strong
  • Provisional: Meta and matchup fit (no tournament data)
  • Data gaps: No combos supplied: floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot match record are absent No win-rate telemetry exists in YGOVN Meta Power is provisional unless a dated metagame sample is supplied Usage-statistics core list marks Fiendsmith's Requiem, Sequence and Desirae as absent while the Extra Deck list shows them present; core-present percentage is unreliable Deck title is null

More OCG Info

Fiendsmith

Fiendsmith Breakdown

 
 

 

 

 

 

 

 
 

 

 
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