Endymion Deck #773503 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 33/100 (±6 · Confidence: Medium)

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

Legality

Main 41 / Extra 11 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Endymion Pendulum (Spell Counter removal to destroy field cards and place counters) and Xyz boss pressure from Number 104 / Number C104 Masquerade or Umbral Horror Masquerade (3000 ATK).; Bamboo Sword direct-attack chip with Original Bamboo Sword's destroy-all on battle damage; Frozen Lady Justice and Gaia Dragon as extra bosses when a Rank 5/6 Xyz is available.
• Turn 1 (going first): Spell-heavy opener: draw/search spells (Upstart Goblin, Wonder Wand, Golden Bamboo Sword, Royal Magical Library) to find a Level 4 monster for Summoner Monk, then Xyz Summon Masquerade or Dugares off the Summoner Monk / Royal Library chain.
• Turn 2 (going second): Six-card hand needs one monster plus one draw/search spell; Masquerade negation (detach 1 material) and Endymion counter removal are the only real interaction, with no hand traps or floodgates.
• Recovery: Summoner Monk (discard a Spell, Special Summon a Level 4 from Deck) and the triple-copy draw spells refill the hand; Verre and Spell Power Mastery search Endymion-archetype cards.
• After siding: No side deck is registered (Side Deck size 0), so there is no post-side plan; the deck cannot adapt between games.

Why it scores here

The deck is legal (41 main, 11 extra, Foolish Burial Goods at its Limited cap) and scored on how the system behaves, not on its card quality or the archetype's popularity. Its engine is thin: Endymion, the only Pendulum boss that drives the Spell Counter plan, is a single copy with about a 12% chance of appearing in a 5-card opener, and only 4 of 41 main cards and 4 of 52 total cards carry the exact Endymion name. The deck instead leans on generic draw and search spells, which give it a reasonable resource economy, and on Summoner Monk plus Royal Magical Library to convert spells into Level 4 Xyz material, which gives it real closing power with 2800-3000 ATK bosses. The score is pulled down by a brick-prone build (31 spells to 10 monsters, about 23% zero-monster opening hands, and 10 equip cards that all need a monster), by competing sub-engines (Bamboo Sword, Magistus, Gaia, Seventh Tachyon) that conflict, by many Extra Deck cards that need Rank 5/6 Xyz or Dark Magician to function, and by having no side deck. No combo boards, tournament results, or dated meta are present, so Meta Power is provisional and the floor and median are text-only inference.

Dimension scores

How the score was computed

Strategy profile: Toolbox (meta-neutral: D13 dropped, weights renormalised over 95). Structural ≈ 43, Going First ≈ 46, Going Second ≈ 40, Meta = provisional, Tournament Reliability ≈ 38. Modifiers: Engine conflicts (-4); Single-copy engine choke (-3); No side deck (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional/null): 0.80*43 + 0.20*38 = 42.0; modifiers -9 -> 33

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.12 · key two-card combo ≈ — · full-brick estimate ≈ 0.23 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Draw and search density: 9 searcher-text cards and 5 draw-text cards give the deck a grind base
• Summoner Monk x3 plus Royal Magical Library x3 supply Level 4 Xyz material for Masquerade and Dugares
• High-ATK bosses: Umbral Horror Masquerade 3000, Endymion 2800, Dark Magician of Destruction 2800
• Legal list with no copy-limit violations

Weaknesses

• Spell-heavy: 31 spells to 10 monsters, so about 23% of opening hands have no monster
• Only 7.7% exact-name Endymion purity; the list mixes Bamboo Sword, Magistus, Gaia, Seventh and Spellbook
• Extra Deck cards Gaia Stream, Gaia Dragon, Frozen Lady and Dark Magician of Destruction need Rank 5/6 Xyz or Dark Magician that the main deck does not reliably supply
• No hand traps, no floodgates, and no side deck

Critical choke points

• Endymion (1 copy, 12.2% in opener) is the main Pendulum payoff
• Summoner Monk plus a Level 4 monster is the only Xyz-enabling route in most hands
• Seventh Tachyon depends on a Number 101-107 Xyz in the Extra Deck (Number 104 and Number C104 are present)

Recommended changes

Evidence & confidence

• Verified: Deck is legal: 41 main, 11 extra, 0 side within the Master Duel size rules [40-60, 0-15, 0-15]; Foolish Burial Goods runs 1 copy at its Limited cap; Exact-name Endymion purity is 4 of 52 cards (7.7%); Usage stats: 1 of 25 listed core cards is present (4%)
• Inferred: Opening-hand probabilities (0.122 Endymion, 0.731 searcher, 0.227 zero-monster hand); Sub-engine conflict across Bamboo Sword, Magistus, Gaia, Seventh and Endymion; Extra Deck enablement gaps for Gaia Stream, Gaia Dragon and Dark Magician of Destruction; Structural estimate of about 43 and final of about 33
• Provisional: Meta Power is null: no dated metagame sample and no tournament link; D13 matchup and format fit is neutral and excluded from Structural
• Data gaps: No combos supplied: floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry (going-first/second, matchup, brick or starter rates) Usage statistics list a 25-card core that is 4% present; this may reflect archetype-wide staples rather than this build Deck title is null Meta Power is provisional without a dated metagame sample