Spellbook Deck #671981 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)

• Primary strategy: Combo
• Secondary strategies: Midrange
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Extra Deck boss monsters reached through Pendulum (Endymion line, Mythical Beast Pendulums) and Fusion/Link summons, e.g. Thelematech Clatis (3000 ATK), Starving Venom Fusion Dragon (2800 ATK).; Invoked Fusion monsters enabled by Aleister the Invoker and Invocation, with Link monsters for extra board presence.
• Turn 1 (going first): Search with Spellbook of Secrets, Aleister the Invoker and Endymion-line Pendulums, then build Spell Counters and Fusion/Link summons. Reliability is weak: each 3-copy starter has only about 34% chance to appear in a 5-card opening hand.
• Turn 2 (going second): Hand of 6 gives about 39% for a 3-copy starter. No hand traps are run, so going second depends on Harpie's Feather Duster and Called by the Grave, and the latter cannot legally be run.
• Recovery: Spellbook recursion and Invocation GY effects, plus Pendulum re-summons. These are text-only reads with no combo data to confirm them.
• After siding: Not available. The deck has no Side Deck, so there is no post-side plan.

Why it scores here

The deck is scored as a system on consistency, engine cohesion, conversion, interaction and recovery, not as an average of its card scores. Its main weakness is access: each 3-copy starter has about a 34% chance to appear in the opening five cards, and the archetype's core cards are absent (0 of 25 usage-core cards, 12.7% exact-name purity). Its ceiling is real: Pendulum and Fusion/Link boss monsters reach 2800 to 3000 ATK, and there are about nine negation or removal text hooks. The list runs Called by the Grave, which is Forbidden in Master Duel, so the deck is Illegal and the score is capped as structural-only. Usage popularity and archetype naming did not add points.

Dimension scores

How the score was computed

Strategy profile: Combo primary, Midrange secondary. Structural ≈ 42, Going First ≈ 36, Going Second ≈ 30, Meta = provisional, Tournament Reliability ≈ 30. Modifiers: banlist exposure (-4); weak post-side plan (-3). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers = 0.80*42 + 0.20*30 - 7 = 32.6, then the Illegal cap applies, giving 20 (structural-only, theoretical).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.34 · 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

• Searcher density (21 searcher-text cards) gives high P(at least one searcher)
• Boss monsters at 2800 to 3000 ATK
• Negation and removal text across several cards
• Full 15-card Extra Deck with Link, Fusion and Xyz options

Weaknesses

• Starter access only about 34% per 3-copy card in the opening five
• Illegal: Called by the Grave is Forbidden and over copy limit
• No Side Deck
• Low archetype purity (12.7%) and 0 of 25 usage-core cards present
• No hand traps for going second

Critical choke points

• Endymion/Aleister starter access, with 3 copies each
• Fusion routes depend on Aleister the Invoker and Super Polymerization
• Illegal Called by the Grave in the list

Recommended changes

Evidence & confidence

• Verified: Legality: Called by the Grave is Forbidden with 1 copy run, so the deck is Illegal; Main 40, Extra 15, Side 0 (within size rules); Harpie's Feather Duster Limited 1 and Super Polymerization Semi-Limited 2, both legal; Card stats and text for the listed cards; 0 of 25 usage-core cards present; Archetype purity 12.7%
• Inferred: Starter access ≈ 34% per 3-copy card in an opening five (hypergeometric); Consistency and brick estimates from composition and card text; Interaction and recovery reads from card text; Going-first and going-second reads
• Provisional: Meta power (no dated metagame sample); Matchup and format fit (D13)
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot match record absent No win-rate telemetry (going-first/second, matchup, brick/starter/OTK rates) Meta Power is Provisional unless a dated metagame sample is supplied Side Deck is empty (0 cards), so post-side performance cannot be assessed Title is null; the deck was identified by ID and archetype only