Fiendsmith Deck #756787 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±10 · Confidence: Low)

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

Legality

Main 44 / Extra 15 / Side 0 — status: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Fiendsmith Extra Deck Link and Fusion boards (Underworld Goddess, Fiendsmith's Lacrima) closing through Mitsurugi and Snake-Eye boss monsters; Azamina and Snake-Eye Fusion/Continuous boards from the Extra Deck
• Turn 1 (going first): Open on Fiendsmith Engraver or Fiendsmith's Tract and Lacrima the Crimson Tears, then use the search chain to find the Extra Deck link or fusion enabler; hold Ash Blossom and Droll as protection
• Turn 2 (going second): Hold Ash Blossom, Droll and Maxx C to answer the opponent's first summon or search, then rebuild through Snake-Eye and Mitsurugi searchers
• Recovery: Recover from the GY through Lacrima GY effects, Snake-Eye Ash and Mitsurugi Prayers, then re-search the missing starter with Fiendsmith's Tract or the Mitsurugi Ritual chain
• After siding: Not applicable: the deck runs no Side Deck, so there is no post-side plan

Why it scores here

The deck opens reliably because its searcher text covers about 98% of opening hands (5-card hand, Inferred), and the Fiendsmith core is 12 of 14 usage-core cards present. Its interaction is the strongest part: six hand traps, five negation effects and six removal effects give dense answers on both turns. Conversion is capped by the composition: only 7 of 52 archetype-tagged copies are exact Fiendsmith cards (11.9% purity), with Snake-Eye, Mitsurugi, Azamina and Sinful Spoils splashed in, so the engine lines compete for the same hand space. No recorded boards exist, so the combo floor, median and ceiling are text-only inferences and are not averaged from card scores. The deck is Illegal (Snake-Eyes Poplar over its copy limit) and has no Side Deck, so it is capped at 35 and scored structurally only.

Dimension scores

How the score was computed

Strategy profile: Control. Structural ≈ 54, Going First ≈ 55, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 48. Modifiers: banlist exposure (-3); engine conflicts (-5); no post-side plan (-4). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability + modifiers (-12) = about 41, capped at 35 because the list is Illegal (theoretical/structural read only)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.98 · 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: six hand traps, five negation texts and six removal texts
• Strong closers: Ame no Murakumo no Mitsurugi 3200, Flamberge Dragon 3000 and Underworld Goddess 3000
• Many searchers give a high chance of a playable opening hand

Weaknesses

• Illegal list: Snake-Eyes Poplar is over its Limited copy count
• Only 12 percent exact-archetype purity, so the engines fight for the same space
• No Side Deck and no post-side plan
• Main-deck Fiendsmith starters are few (2 Engraver, 1 Lacrima, 1 Tract, 1 Lurrie)

Critical choke points

• Fiendsmith Engraver x2 and Fiendsmith's Tract are the only main-deck Fiendsmith engine starters
• Mitsurugi Ritual and Mitsurugi Prayers need Reptile tributes from a board that may already be cleared
• Snake-Eye lines need Level 1 FIRE monsters that the interruptions also remove

Recommended changes

Evidence & confidence

• Verified: Illegal status: Snake-Eyes Poplar 2 copies vs limit 1; Main 44, Extra 15, Side 0 within size rules; Composition, purity 11.9 percent, and banlist statuses from the evidence
• Inferred: Hand-level searcher, hand-trap and core probabilities; Dimension scores D1 to D14 and the weights; Interaction density read from card text
• Provisional: Meta Power (no dated meta sample); Matchup fit (D13)
• Data gaps: No combos supplied, so combo floor, median and ceiling are text-only No tournament link, so archetype meta-share and match record are absent No win-rate telemetry exists in YGOVN Usage-statistics in_this_deck flags conflict with the cards list: Fiendsmith's Requiem, Fiendsmith's Lacrima, Fiendsmith's Sequence and D/D/D Wave High King Caesar are in the Extra Deck in cards[] but flagged in_this_deck false; core_present_pct of 57.1 is understated and the real core presence is about 12 of 14 (85.7 percent), with only S:P Little Knight and Moon of the Closed Heaven absent Deck title is null