Book of Deck #774703 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 56/100 (±6 · Confidence: Medium)

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

Legality

Main 40 / Extra 3 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Fusion Summon Twin-Headed Thunder Dragon (ATK 2800) from Extra Deck via Polymerization or Fusion Sage, with Thunder Dragon or King of the Swamp as fusion material.; Thunder Dragon and Battle Ox / Summoned Skull beatdown after the board is cleared by the removal suite.
• Turn 1 (going first): Search Thunder Dragon or Polymerization with King of the Swamp or Fusion Sage, then fuse into Twin-Headed Thunder Dragon, or use Book of Moon and Mystical Space Typhoon to clear a blocking backrow before attacking.
• Turn 2 (going second): Use hand traps-free interaction (Mirror Force, Solemn Judgment, Torrential Tribute, Magic Jammer) to break the opponent's first board, then rebuild through Thunder Dragon searches into a Fusion Summon.
• Recovery: Pot of Avarice recycles up to five GY monsters to the Deck to refuel, and Sangan / Spirit Reaper provide follow-up bodies.
• After siding: No Side Deck is registered, so no post-side plan is available; this is a provisional gap rather than a measured weakness.

Why it scores here

The deck's power comes from its system: a Thunder Dragon searcher network (Thunder Dragon, King of the Swamp, Fusion Sage, Polymerization) that reliably reaches a Fusion Summon of Twin-Headed Thunder Dragon, backed by a dense, mostly unique interaction suite (Mirror Force, Solemn Judgment, Heavy Storm, Torrential Tribute, Magic Jammer, Jinzo, Dust Tornado) that keeps the board contestable. The deck opens a functional plan in roughly 58% of five-card hands containing at least one of its six starter-type cards (Inferred), so consistency is good but not elite, and recorded combo data is absent, so ceiling and median output are text-only inferences. Its weakest points are the single-card Extra Deck dependence (three Twin-Headed copies), the empty Side Deck, and the lack of any tournament or win-rate evidence. The score was built from the deck-level system and was not averaged from card scores, and archetype popularity did not earn points.

Dimension scores

How the score was computed

Strategy profile: 0.85 Midrange / 0.15 Toolbox. Structural ≈ 58, Going First ≈ 57, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 52. Modifiers: Extra Deck single-card dependence (-2); Engine compactness (1). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) + ContextModifiers

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.58 · 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, layered interaction suite (Mirror Force, Solemn Judgment, Torrential Tribute, Magic Jammer, Heavy Storm, Dust Tornado, Jinzo)
• Compact searcher network with Thunder Dragon and King of the Swamp leading to Polymerization or Fusion Sage
• Real closing power from Twin-Headed Thunder Dragon at 2800 ATK
• Legal list with no violations; only Heavy Storm and Solemn Judgment are Limited, each run at 1 copy

Weaknesses

• Single Extra-Deck target carries the win condition (three copies of Twin-Headed Thunder Dragon)
• Side Deck is empty, so no post-side adaptation is possible
• No recorded combo or tournament evidence, so the ceiling and median stay inferred
• Many one-of staples dilute consistency and add brick risk

Critical choke points

• Polymerization or Fusion Sage access to the Fusion Summon
• Having two Thunder Dragon-type materials on the field or in hand for the Twin-Headed Thunder Dragon Fusion

Recommended changes

Evidence & confidence

• Verified: Legal list: 40 Main, 3 Extra, 0 Side; no violations; Heavy Storm and Solemn Judgment at 1 Limited copy each; Card text and ATK/DEF stats for every resolved card; Twin-Headed Thunder Dragon 2800 ATK, Extra Deck only; Usage statistics: 16/16 core cards present (100%)
• Inferred: Starter access ≈ 0.58 for at least one of six starter-type cards in opening 5; Searcher-text group P(at least one in 5) ≈ 0.74; Interaction suite gives layered endboard resilience; Ceiling and median are not measured (no recorded boards)
• Provisional: Meta Power is null: no dated metagame sample; Tournament reliability and matchup fit have no tournament link
• 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, brick and starter rates are Inferred or Unknown no Side Deck registered (0 cards), so post-side plan cannot be evaluated Meta Power is Provisional unless a dated metagame sample is supplied