Fiendsmith Deck #704010 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 46/100 (±8 · Confidence: Medium)

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

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Boss monsters from the Extra Deck (Evil Twin's Trouble Sunny 3300 ATK, Fiendsmith's Desirae 2800, D/D/D Wave High King Caesar 2800, Necroquip Princess 2000) once the opponent's board has been disrupted; Nibiru, the Primal Being (3000 ATK) through a mass-summon trigger, and Fiendsmith or Evil Twin link recursion from the GY
• Turn 1 (going first): Open with Fiendsmith Engraver, Fiendsmith's Tract, Lacrima the Crimson Tears or Fiendsmith in Paradise to build a disruptive board, then hold Ash Blossom, Effect Veiler and Droll & Lock Bird for the opponent's turn (Inferred from card text and the Vietnamese guide snippet)
• Turn 2 (going second): Use the six-card hand's hand traps (P(at least one) 0.85) to answer the opponent's first summon, then convert through Live Twin Ki-sikil or Lil-la into Evil Twin link summons (Inferred)
• Recovery: Recover through GY effects on Lacrima the Crimson Tears, Live Twin Ki-sikil Frost, Lil-la Sweet and the Fiendsmith and Unchained link monsters, and through search from Secret Password, Sunny's Snitch and Fiendsmith's Tract (Inferred)
• After siding: No side deck is run (Side Deck size 0), so there is no post-side plan; the deck cannot change its interaction suite between games

Why it scores here

The deck reliably opens an interaction-first hand: P(at least one hand trap in a six-card going-second hand) is about 0.85, and 11 removal-text and 9 negation-text cards give it a dense layer of answers. Its engine is the weak point, since the Fiendsmith core is thin (one Engraver, one Lacrima the Crimson Tears, one Tract) and it is mixed with Live Twin, Evil Twin, Unchained, Primite and D/D pieces that compete for the same Extra Deck slots, so consistency is only moderate (P(at least one archetype-core card in opening five) about 0.74 is a proxy that mixes sub-archetypes). Combo conversion and median output could not be measured because no boards were supplied, so the ceiling and floor are text-only inferences and are scored with low weight. Popularity did not earn points: the usage statistics show only 6 of 12 core cards in the list, and purity is 16.4%. No side deck is run, which caps adaptability. The score was built from the seven-part system (consistency, median output, interaction, resilience, going-second hand quality, cost and pilotability) and was not an average of card scores.

Dimension scores

How the score was computed

Strategy profile: Control. Structural ≈ 55, Going First ≈ 61, Going Second ≈ 57, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: Engine conflicts (-3); Weak post-side plan (-3); Engine compactness (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.74 · 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 interaction: 10 hand traps, 11 removal-text and 9 negation-text cards
• Strong going-second hand-trap coverage (P 0.85 of at least one in six cards)
• Multiple Extra Deck boss options at 2800 to 3300 ATK

Weaknesses

• Fiendsmith core is thin and shares the Extra Deck with other sub-archetypes
• No side deck, so no post-side plan
• Dipity and other one-of tech cards add brick risk without an engine role

Critical choke points

• Live Twin Ki-sikil and Lil-la are needed to reach Evil Twin links; losing them to hand traps stalls the Evil Twin line
• Fiendsmith Engraver and Lacrima the Crimson Tears are the only Fiendsmith starters in the main deck

Recommended changes

Evidence & confidence

• Verified: Legal under BanMasterDuel: Heavy Storm 1/1 Limited, Droll and Lock Bird 2/2 Semi-Limited; Composition: 40 main, 15 extra, 0 side; 11 link, 3 fusion, 1 XYZ in Extra Deck; Archetype purity 16.4%, 46 off-archetype copies; Card texts for hand traps, removal and negation confirmed from excerpts
• Observed: Vietnamese guide describes Fiendsmith Control with turn-1 disruption and turn-2 hand traps
• Inferred: Control as primary strategy and Toolbox as secondary; P(at least one archetype-core card in opening five) 0.74 and hand-trap P 0.85 (hypergeometric); Going-first and going-second plans from card text and guide snippet; Interaction quality score from semantic read of text; Floor, median and ceiling from text only
• Provisional: Meta power and format fit (no dated metagame sample); Tournament reliability inputs (no tournament link)
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference Data inconsistency: usage statistics marks Fiendsmith's Lacrima, Fiendsmith's Sequence and Fiendsmith's Requiem as not in deck, but cards[] lists all three in the Extra Deck; the card list was used and the usage read was not No tournament link: meta share and per-pilot match record absent No win-rate telemetry: going-first, going-second, matchup and brick rates are Inferred Meta Power is provisional without a dated metagame sample Guide coverage is one Vietnamese snippet with no sections