Fiendsmith Deck #698127 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)

• Primary strategy: Control
• Secondary strategies: Stun, Toolbox
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Extra Deck boss monsters from the Snake-Eye/Diabellstar and Fiendsmith lines (Snake-Eyes Flamberge Dragon, Snake-Eyes Doomed Dragon, Baronne de Fleur, The Zombie Vampire, Fiendsmith's Desirae), inferred from card text; Link and Fusion pressure through Fiendsmith's Lacrima and Snake-Eye link/fusion routes (Inferred)
• Turn 1 (going first): Turn 1 disruption and searches through Snake-Eye Ash/Oak/Poplar and Fiendsmith Engraver, then Fiendsmith's Tract or Diabellstar line for board (Inferred from card text)
• Turn 2 (going second): Use the hand-trap suite (Ash Blossom, Ghost Belle, Infinite Impermanence, Droll & Lock Bird, Maxx "C", Nibiru) to break the opponent's first summons, then rebuild through GY recursion (Inferred)
• Recovery: GY recursion from Snake-Eye and Fiendsmith monsters (Lacrima the Crimson Tears, Snake-Eye Oak/Ash/Poplar text) and Diabellstar draw effects (Inferred)
• After siding: Not evaluable: side deck is empty (0 cards), so no post-side plan exists in the evidence (Provisional)

Why it scores here

The deck is scored as a system: its Control profile rests on a dense hand-trap and disruption suite (12 hand-trap tagged copies, P(at least one of a 3-copy card in a 5-card opener) ≈ 0.34, searcher-text group P ≈ 0.90) that can reliably interrupt early summons, and its Extra Deck of boss monsters gives it real closing power. Consistency and conversion are held back by a split engine: only 14.5% of the main deck uses the exact Fiendsmith name and 47 of 40-slot-equivalent copies are off-archetype across Snake-Eye, Diabellstar, Mulcharmy and Millennium lines, which weakens the redundancy of any single route. There is no recorded board data, so the combo ceiling and median are text-only inferences and are not averaged from card scores. The deck is Illegal as submitted (Called by the Grave is Forbidden and run once), and it has an empty side deck, so the score is capped at a theoretical structural read. Popularity from the Fiendsmith archetype and the single guide does not earn points.

Dimension scores

How the score was computed

Strategy profile: Control. Structural ≈ 51, Going First ≈ 50, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: Banlist exposure (-6); Engine conflict (-3); Illegal-list cap (-11). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers = 0.80*51 + 0.20*45 - 9 ≈ 41 (theoretical); Illegal list capped to 30, structural-only

Probability & combo summary

• Opening a starter: P(≥1) ≈ — · 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 hand-trap and negation suite that gives a high chance to interrupt early summons
• Several 3000-ATK boss monsters in the Extra Deck for closing power
• Searcher and GY-recursion text that regenerates resources across turns

Weaknesses

• Illegal as submitted: Called by the Grave is Forbidden and run once
• Split engine: exact archetype purity is 14.5%, with Snake-Eye, Diabellstar and Mulcharmy diluting Fiendsmith
• Empty side deck leaves no post-side plan
• No recorded combo data, so conversion cannot be verified

Critical choke points

• Called by the Grave slot is unplayable in Master Duel as built
• Fiendsmith and Snake-Eye engines must both connect through the same searchers and Engraver

Recommended changes

Evidence & confidence

• Verified: Main 40, Extra 15, Side 0 are within Master Duel size rules; Called by the Grave is Forbidden with 1 copy run (over limit); Snake-Eye and Fiendsmith archetype purity counts from composition; Card stats and effect text from the card list
• Inferred: Opening-hand probabilities are hypergeometric estimates from the resolved Main Deck; Engine accessibility, brick risk and recovery are inferred from card text; Going-first and going-second estimates are text-only
• Provisional: Meta Power (null) and matchup fit (D13) need a dated metagame sample; Post-side plan cannot be assessed without a side deck
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry for this deck (going-first/second, matchup, brick and starter rates) Side deck is empty (0 cards), so no post-side data exists usage_statistics marks Fiendsmith's Lacrima, Sequence, Requiem and Desirae as in_this_deck=false, yet the cards array lists them in the Extra Deck; the usage join appears inconsistent and was not used for scoring Meta Power is Provisional unless a dated metagame sample is supplied