Gem-Knights Deck #754174 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 50/100 (±8 · 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: Fusion Summon Gem-Knight boss monsters (Master Diamond 2900+ ATK, Lady Brilliant Diamond 3400 ATK, Topaz double attack) and push damage on the end board; Master Diamond Dispersion mass Special Summon of up to 3 non-Rock Gem-Knight monsters from Extra Deck and/or GY
• Turn 1 (going first): Use a searcher (Gem-Knight Quartz, Nepyrim, Armadillo or Phantom Quartz) or Brilliant Fusion / Gem-Knight Fusion to reach a Fusion Summon of a Gem-Knight boss, backed by Forbidden Droplet or Heavy Storm for interaction
• Turn 2 (going second): Use Gem-Knight Hollowcore (Special Summonable from hand in Defense Position) and the single Maxx "C" to answer the opponent's first summon, then rebuild a Fusion line from the Deck
• Recovery: Gem-Knight Fusion can be added from the GY by banishing a Gem-Knight monster; Hollowcore can banish Gem-Knights from the GY to negate; Pot of Sloth draws when the hand is empty
• After siding: None: the deck runs zero Side Deck cards, so there is no post-side plan

Why it scores here

The deck reliably opens a functional plan: at least one of its 12 searcher or core cards appears in the opening five with about 85% probability, while any single 3-copy starter is only about 34%. Conversion is strong at the ceiling because the Extra Deck holds 3000+ ATK Fusion bosses with double attacks and mass summon, but no recorded boards exist, so the median is scored lower on the guide's note that the combo is cumbersome and bricks. Interaction is spread across several spells (Forbidden Droplet x3, Heavy Storm, Harpie's Feather Duster, Lightning Storm) and one hand trap, with recursion from the GY, which earns the resilience and resource scores. The score is held down by the empty Side Deck, the 19 off-archetype main slots and the Mulcharmy engine that conflicts with a board-dependent Gem-Knight line. Popularity did not earn points, and card scores were not averaged; the score reflects the deck as a system.

Dimension scores

How the score was computed

Strategy profile: 70% Combo / 30% Midrange. Structural ≈ 60, Going First ≈ 62, Going Second ≈ 56, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: Empty Side Deck (-3); Engine conflict (-3); Engine compactness (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional, null; no dated metagame sample)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.85 · key two-card combo ≈ — · full-brick estimate ≈ 0.15 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Compact 3-of starter density with 12 searcher or core cards (about 85% to find one in the opening 5)
• Strong closing power: 2900-3400 ATK Fusion bosses, double-attack Topaz and Master Diamond Dispersion mass summon
• Full Extra Deck usage (15 of 15), with recursion from the GY
• Legal list with all restricted cards at 1 copy

Weaknesses

• No side deck, so no post-side adaptation
• 19 off-archetype Main Deck slots dilute the engine and add dead-draw risk
• Only one hand trap, so the going-second board-breaking profile is thin
• No recorded boards, so the median output cannot be measured

Critical choke points

• Fusion Summon of a Gem-Knight boss depends on Brilliant Fusion, Gem-Knight Fusion or a Quartz/Nepyrim search; each 3-copy starter appears in the opening 5 only about 34% of the time

Recommended changes

Evidence & confidence

• Verified: Legal status and copy limits (Limited cards at 1 copy each); Main 40, Extra 15, Side 0 counts and size rules 40-60 / 0-15 / 0-15; Card text and stats for the Fusion bosses and key spells; Archetype usage stat rows (39 rows, Book of Eclipse, Droplet, Brilliant Fusion and Scatter Fusion at 100% inclusion)
• Observed: Usage statistics show the archetype core, with 6 of 25 core cards present in this list
• Inferred: Hypergeometric starter, searcher and brick estimates; Structural dimension scores D1-D11 and D14 from card text; Ceiling read (D3) from text only, since no boards were recorded; Going-first and going-second estimates
• Provisional: Meta Power (null) and D13 matchup/format fit (placeholder 50): no dated metagame sample or tournament link
• 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 and matchup rates are Inferred or Unknown Meta Power is Provisional without a dated metagame sample Usage statistics mark Gem-Knight Seraphinite as not in this deck (in_this_deck false), but the card list shows 1 copy in the Extra Deck; treat the usage-to-deck link as inconsistent Deck title is null, so the deck is identified only by archetype and ID