Gem-Knights Deck #756825 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 56/100 (±8 · Confidence: Low)

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

Legality

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

Identity & game plan

• Win condition: Fusion Summon Gem-Knight boss monsters (Lady Brilliant Diamond 3400 ATK, Master Diamond, Topaz double attack, Ruby) from Extra Deck via Brilliant Fusion and Gem-Knight Dispersion, then attack through a stalled board.; Gem-Knight Quartz and Nepyrim search and summon lines feeding Gem-Knight Phantom Quartz and Master Diamond Dispersion for repeated board presence; Mulcharmy draws convert spare resources into card advantage.
• Turn 1 (going first): Open with a Gem-Knight starter (Quartz, Nepyrim, Armadillo) or Brilliant Fusion and search a second Gem-Knight piece, then fuse into a 3-material boss; hold Forbidden Droplet or Lightning Storm for the opponent's first big board.
• Turn 2 (going second): Use Lightning Storm, Heavy Storm, Feather Duster or Illusion Gate to clear the opponent's set-up backrow or monsters, then rebuild a fusion board from the six-card hand; Pot of Sloth and Mulcharmy draws fill gaps.
• Recovery: Gem-Knight Fusion recovers from the GY by banishing a Gem-Knight, and Gem-Knight Phantom Quartz, Dispersion and Master Diamond Dispersion revive Fusion pieces from the GY; Pot of Sloth and Mulcharmy draws refill hand.
• After siding: No side deck is registered (side count 0, Master Duel), so no post-side plan exists; play-to-play adaptation depends on the opening.

Why it scores here

The deck reliably opens a Gem-Knight engine: with 13 archetype core copies, the chance of at least one core card in a 5-card opening hand is about 0.88, and at least one searcher is about 0.82 (Inferred from the hypergeometric draw table). The score comes from the system as a whole: fusion-chain consistency, a strong interaction suite (Droplet, Lightning Storm, Heavy Storm, Feather Duster, Illusion Gate, Dispersion), and Extra Deck bosses with high ATK, not from averaging card scores. Popularity is not credited: the Gem-Knights archetype usage data only confirms the core list is real. Several Extra Deck choices (Sea Monster of Theseus, Secreterion Dragon, Garura, Mudragon) require niche same-type or same-attribute materials and dilute consistency, and the Mulcharmy and Greed/Forbidden splash lines are off-archetype. With no recorded boards, no combo floor, and no tournament or win-rate data, the score is capped by low confidence, and the unknown median output keeps the floor band wide.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 60, Going First ≈ 58, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 52. Modifiers: Off-archetype dilution (-2); Dead-slot Extra Deck materials (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional); Structural 60.3 and TR 52 give 58.6 before modifiers, then -3 total modifiers, rounded to 56

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.82 · key two-card combo ≈ — · full-brick estimate ≈ 0.12 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Engine has a high chance of a live starter in the opening hand (archetype core about 0.88, searcher about 0.82; Inferred)
• Strong interaction suite: Forbidden Droplet, Lightning Storm, Heavy Storm, Feather Duster, Illusion Gate, Dispersion (Verified card text, Inferred density)
• High-ATK Extra Deck bosses (Lady Brilliant Diamond 3400, Master Diamond 2900 with GY scaling) give a real closing ceiling
• Legal in Master Duel with all Limited and Semi-Limited cards within copy limits (Verified legality)

Weaknesses

• No recorded combo boards, so floor and median output are unknown (Verified gap)
• Fusion-chain bootstraps need 2 to 3 specific cards, making bricks and misses costly (Inferred)
• Conditional Extra Deck cards (Sea Monster, Secreterion, Garura, Mudragon) lower Extra Deck efficiency (Inferred)
• Off-archetype splash (Mulcharmy, Greed, Forbidden) dilutes engine consistency (Verified composition)

Critical choke points

• Gem-Knight Fusion and Brilliant Fusion are the main bridges into bosses; losing them to a single disruption collapses the T1 plan (Inferred)
• Heavy Storm and Maxx C are Limited to 1 copy each, so a single hit removes that interaction (Verified banlist)

Recommended changes

Evidence & confidence

• Verified: Main 40, Extra 15, Side 0 meets Master Duel size rules; Restricted cards Feather Duster, Heavy Storm, Maxx C at 1 copy each and Super Polymerization at 2 copies, all within limit; Archetype core 13 copies and 3-copy engine cards per the composition
• Observed: Gem-Knights guide reports fusion-chain combos are brick-prone and handtrap-heavy (guide snippet)
• Inferred: P(at least one starter in opening hand) ~0.82 for searchers and 0.88 for core cards; Full-brick proxy ~0.12; Interaction density and closing power are high from card text; Extra Deck dead-slot count from required materials
• Provisional: Meta power is null: no dated metagame sample supplied; Matchup and format fit (D13) and side adaptability (D12) are provisional with no tournament data or side deck
• 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 for going-first, going-second, matchup or brick rates Meta Power is provisional without a dated metagame sample Side deck is empty (Master Duel), so post-side adaptability cannot be measured Deck title is null in the export