Mitsurugi Deck #761649 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 64/100 (±6 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: Ritual Summon Ame no Murakumo no Mitsurugi (3200 ATK, destroys opposing monsters on Special Summon) or Ame no Habakiri no Mitsurugi (2400 ATK, opponent monsters lose 800 ATK), backed by Extra Deck Synchro, Link and Xyz boards; Futsu no Mitama no Mitsurugi recursion from the GY plus Xyz and Synchro pressure from the Extra Deck
• Turn 1 (going first): Normal Summon Mitsurugi Aramasa, Saji or Kusanagi to search a Mitsurugi card, then use Mitsurugi Ritual or Mirror to bring out a 5-8 level Ritual Monster, keeping Ash Blossom and Infinite Impermanence up for the opponent's first answer
• Turn 2 (going second): Hold Ash Blossom, Infinite Impermanence, Maxx C and Dominus Impulse to blank the opponent's first board-building line, then rebuild through Reptile searchers and Ritual Summon
• Recovery: Reptile tributes and GY recursion (Kusanagi, Futsu no Mitama, Mitsurugi Great Purification) reload the search chain after a lost board
• After siding: Bring in Droll and Lock Bird and Evenly Matched against Extra-Deck-heavy or board-based opponents, and Dimensional Fissure against GY-based engines

Why it scores here

The deck opens a functional plan at a high rate: searchers are present in 18 Main Deck copies, the chance of at least one searcher in a 5-card opening hand is about 0.96, and the archetype core is in hand about 0.98 of the time (Inferred from hypergeometric estimates). Its strength comes from a connected Reptile system in which searchers, Ritual spells and GY recursion feed one another, and hand traps (Ash Blossom, Infinite Impermanence, Maxx C) protect the first engine link. The ceiling (Ame no Murakumo, Ame no Habakiri) is scored separately from the median, which is not measured because no combo boards are recorded, so the median stays at a moderate, inferred level. Popularity signals (archetype core inclusion and one guide) confirm that the list is real and accessible but did not earn points by themselves, and no card scores were averaged into the deck score. The score is held back by the single-copy Droll and Lock Bird lock risk noted in the guide, by the Extra Deck's wide spread across unrelated engines, and by the absence of tournament or matchup data.

Dimension scores

How the score was computed

Strategy profile: 0.8 Midrange + 0.2 Stun (secondary hand-trap and interaction emphasis reflected in D7 and D8 scoring, not in the weight vector). Structural ≈ 67.4, Going First ≈ 68, Going Second ≈ 66, Meta = provisional, Tournament Reliability ≈ 64. Modifiers: banlist exposure (-1); unrecoverable choke point (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) + ContextModifiers = 0.80*67.4 + 0.20*64 - 3 ≈ 63.7 → 64

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.96 · 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 density (18 copies) makes the first engine link very reliable
• Interaction spread across hand traps, negations and board wipe (Murakumo) gives layered answers
• Compact 40-card Main Deck with clear copy-limit compliance and no violations
• Recursion through GY Reptiles gives multi-turn resource regeneration
• Strong ceiling cards (Murakumo 3200 ATK, Habakiri -800 ATK effect)

Weaknesses

• Single Droll and Lock Bird or GY banish effects can stall the engine
• Extra Deck spread across unrelated engines reduces coherence
• Median output is unmeasured; the deck's actual board conversion rate is unknown
• Hand traps and situational Mitsurugi pieces create some dead-draw risk
• No tournament or dated matchup evidence to confirm fit

Critical choke points

• Droll and Lock Bird lock on the first searcher
• Banish-based GY removal cutting off Reptile recursion
• Ritual Summon requires Reptile tributes, so a board with no Reptile monsters blocks the main line

Recommended changes

Evidence & confidence

• Verified: Legal in Master Duel: 40/15/15 with all Limited and Semi-Limited copies within legal_copies; Extra Deck breakdown: Synchro 7, Link 4, Xyz 4; Core usage stats: 13 of 21 core cards present (61.9%); Ritual Effect Monsters count 5 in the Main Deck
• Observed: One guide mentions Droll and banish-heavy decks as the main threats
• Inferred: Searcher and core hypergeometric estimates (0.96 and 0.98); Midrange primary with Stun secondary from text-based interaction density; Consistency, recursion and interaction scores from card text; Going-first and going-second estimates
• Provisional: Meta power (null, no dated sample); Matchup fit (no tournament or meta-share data)
• Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN (going-first/second, matchup, game-level, brick/starter/OTK rates) — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied deck title is null in the export; deck_name is null guide snippet is a single Vietnamese mention with no sections, so its evidence is thin