Gem-Knights Deck #766499 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 58/100 (±6 · Confidence: Medium)

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

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Extra Deck Gem-Knight Fusion boss (Lady Brilliant Diamond 3400 ATK, Master Diamond Dispersion 3000 ATK, Ruby, Topaz, Prismaura) reached through Brilliant Fusion, Gem-Knight Dispersion and Nepyrim/Quartz starts; Gem-Knight Fusion recursion from the GY and repeated Fusion Summons from the Extra Deck, with Droll, Maxx C and Forbidden Droplet keeping the opponent off the board
• Turn 1 (going first): Normal Summon Gem-Knight Quartz or Nepyrim to search a Gem-Knight, then Brilliant Fusion or Dispersion into a Gem-Knight Fusion Monster
• Turn 2 (going second): Hand trap (Droll and Lock Bird, Maxx C) or Forbidden Droplet to slow the board, then Gem-Knight Hollowcore or a Fusion from the Extra Deck on the next turn
• Recovery: Banish Gem-Knight monsters from the GY to re-add Gem-Knight Fusion, Hollowcore re-summons from hand and Fusion Monsters reused via GY effects
• After siding: None. Side deck is 0 cards and Master Duel is a single game, so no post-side plan exists

Why it scores here

The score comes from the deck as a system: a 12-copy starter group (Quartz, Nepyrim, Dispersion, Brilliant Fusion) gives about an 85% chance of at least one starter in a 5-card opening hand, which is an Inferred hypergeometric estimate, and the Extra Deck supplies several high-ATK bosses that convert a live engine into pressure. Interaction is broad (13 removal-text and 5 negation-text cards, Droplet, Droll, Maxx C, Heavy Storm, Lightning Storm, Illusion Gate), which lifts the end-board and resilience dimensions, and the Gem-Knight recursion keeps resources recoverable. Penalties come from six single-copy situational spells diluting the main deck, the absence of any side plan in a single-game format, and no recorded boards or tournament data, so median output and matchup fit stay Provisional. Archetype popularity did not add points, and no card scores were averaged into the deck result.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 63, Going First ≈ 60, Going Second ≈ 56, Meta = provisional, Tournament Reliability ≈ 55. Modifiers: Tech dilution (-2); No post-side plan (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional); 0.80*63.2 + 0.20*55 = 61.5, then modifiers -4 = 57.5, rounded to 58

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.85 · 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 starter group (12 copies) gives high P(live engine) in hand 5
• Broad interaction: hand traps, Droplet, board-clearing spells, Illusion Gate, Book of Eclipse
• High-ATK Extra Deck bosses with recursion options
• Legal in full: no copy-limit or size violations

Weaknesses

• Spell-heavy main (23 of 40) with 6 situational single-copy spells
• Single-game format with no side plan
• No recorded combos, no tournament data, so median output and matchup fit are unknown
• Ash Blossom and Gem-Knight Amethyst absent despite high archetype usage

Critical choke points

• Gem-Knight Fusion-dependent lines need a Gem- monster on field or GY; a hand of spells alone can stall
• Heavy Storm and Lightning Storm are Limited or conditional and cannot be relied on as recovery

Recommended changes

Evidence & confidence

• Verified: Legal: 40 Main, 15 Extra, 0 Side within Master Duel size rules; Copy limits respected for Limited and Semi-Limited cards (Heavy Storm, Maxx C, Droll x2, Fallen x2); Extra Deck composition 10 Fusion, 3 Link, 1 Synchro, 1 Xyz
• Observed: Usage statistics: 9 archetype rows; Ash Blossom and Amethyst absent from the list
• Inferred: 12-copy starter group gives about 85% P(at least one in hand 5); Interaction density and resilience read from card text; Going-second and closing estimates from text and stats
• Provisional: Meta Power (no dated metagame sample); Matchup and format fit (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 (going-first/second, matchup, brick/starter rates) usage_statistics in_this_deck flags mark 9 Extra Deck cards as missing (Master Diamond, Prismaura, Topaz, Ruby, Aquamarine, Seraphinite, Lady Brilliant Diamond, Phantom Quartz, Master Diamond Dispersion) although cards[] lists them in the extra zone; treated as present; core_present_pct 52 is an exporter artifact and was not used deck title is null no side deck (single-game format)