Endymion Deck #774258 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 33/100 (±7 · Confidence: Medium)

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

Legality

Main 41 / Extra 9 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Endymion (Pendulum, 2800 ATK) and the Fusion/Xyz/Link boss pool (Aiwass, Dark Magician of Destruction, Dugares) converting Spell Counter and draw advantage into a board; Original Bamboo Sword direct-attack board wipe, and Possessed Destiny - Wynn control steal when Fusion Summoned
• Turn 1 (going first): Draw and search with Upstart Goblin, Spellbook of Knowledge and Spell Power Mastery, then hope for a Level 4 Spellcaster (Summoner Monk or Royal Magical Library) to open Endymion or Abductor pendulum scales. Only about a 33% chance of at least one Summoner Monk in a 5-card hand.
• Turn 2 (going second): Six-card hand with the same draw-engine structure; the deck has no hand traps or floodgates, so going second relies on Spell Power Attainment negation and Endymion removal after the opponent's board is set
• Recovery: Rebuild through the Spell Power searchers (Spell Power Mastery, Spell Power Grasp) and Royal Magical Library draws, since the deck has 9 searcher-text cards and 6 draw effects
• After siding: None: the deck runs zero side cards, so there is no post-side adaptation

Why it scores here

The deck reliably opens draw and search effects (Upstart Goblin, Spellbook of Knowledge, Spell Power Mastery, Royal Magical Library), but its real engine, Endymion, is a single copy with about a 12% chance of appearing in a 5-card opening hand, so the starter is the weak point. Its ceiling comes from Spell Counter removal and the Fusion/Xyz boss pool, which is strong once a board exists, yet only 9 main-deck monsters back up 30 Spells, and the 6 Bamboo Sword equips need Bamboo Sword monsters the list does not run, which pulls the floor and median down. Interaction is thin (2 negation-text cards, 5 removal-text cards, no hand traps or floodgates), and there is no side deck, so going second and post-side play score low. Frequency is not counted here: the Endymion archetype is well represented in usage statistics, but only 4 of 21 core cards are present, and the score comes from the system's consistency, median output and interaction, not from averaging card scores or from archetype popularity.

Dimension scores

How the score was computed

Strategy profile: Combo primary; Toolbox secondary disclosed but not blended into weights. Structural ≈ 43, Going First ≈ 38, Going Second ≈ 34, Meta = provisional, Tournament Reliability ≈ 38. Modifiers: engine conflict (-4); unrecoverable choke point (-3); weak post-side plan (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional); 0.80*43 + 0.20*38 = 42.0, minus 9 modifiers = 33

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.33 · 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

• Draw density: Upstart Goblin x3, Royal Magical Library x3, Golden Bamboo Sword x3, Into the Void x3, Spellbook of Knowledge, Dugares
• Coherent Endymion Spell Counter package: Spell Power Mastery, Spell Power Grasp, Spell Power Attainment, Magical Citadel of Endymion
• Strong boss pool in the Extra Deck, with 6 Fusion, 2 Xyz and 1 Link

Weaknesses

• Endymion is a single copy, so the engine rarely starts
• Only 9 monsters in Main, so most Spells have no target
• No hand traps, no floodgates, no side deck
• Bamboo Sword engine has no Bamboo Sword monsters to support it

Critical choke points

• Endymion Pendulum summon (1 copy, P ≈ 0.12 in 5 cards)
• Summoner Monk x3 as the only reliable early Level 4 body (P ≈ 0.33 in 5 cards going first)

Recommended changes

Evidence & confidence

• Verified: Legal in master-duel, 41 Main and 9 Extra within size rules, Foolish Burial Goods 1 of 1 Limited; Card text for all 27 Main and 6 Extra distinct cards; Composition counts: 30 Spell, 9 monster, 2 trap in Main; Archetype core present 4 of 21 (19%)
• Inferred: Summoner Monk and Endymion opening-hand odds (hypergeometric); Brick rate from dead Bamboo Sword and Wonder Wand pieces; Going-first and going-second plan quality; Interaction density from text
• Provisional: Meta power and D13 matchup fit: no dated metagame sample
• 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 exists in YGOVN (going-first/second, matchup, brick/starter/OTK rates) Meta Power is Provisional unless a dated metagame sample is supplied Evidence inconsistency: usage_statistics marks Artemis, the Magistus Moon Maiden and Dark Magician of Destruction as in_this_deck false, but both appear in the Extra list with 1 copy each; treated as present, must be reconciled before import No side deck and no post-side data Monster count in Main is 9 (derived from the card list), so monster-dependent Spell effects are unverified in practice