Gem-Knights Deck #773777 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 55/100 (±8 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: Fusion Summon high-ATK Gem-Knight monsters (Master Diamond, Lady Lapis Lazuli, Master Diamond Dispersion, Zirconia) and attack through the board; Lady Lapis Lazuli 500-damage effect and Gem-Knight Ruby / Lady Rose Diamond follow-up pressure
• Turn 1 (going first): Use Brilliant Fusion, Gem-Knight Fusion, Dispersion, Absorb or Scatter to Fusion Summon from Lapis + Quartz/Hollowcore/Lazuli material, searching the next Gem-Knight with the searcher effects
• Turn 2 (going second): Open with Ash Blossom, Maxx C or Droll to slow the opponent's first play, then Fusion through the board with the same spell engine
• Recovery: Recover from the Graveyard: Gem-Knight Fusion banish-to-hand, Lazuli returning a Normal Monster, Quartz GY effect, Crystal Rose GY Special Summon, and Hollowcore hand Special Summon
• After siding: None available: the deck runs 0 Side Deck cards, so there is no post-side plan

Why it scores here

The deck reliably opens a functional Fusion starter: the archetype-core group has a 0.949 chance of at least one copy in a 5-card opening hand, and the 15 searchers give a 0.919 chance of at least one, so the engine is usually live by turn 1 to 2. Conversion is credible on the system level: the Extra Deck carries several 2900 to 3000 ATK Fusion boss monsters, and the Master Diamond Dispersion and Lady Lapis Lazuli lines convert one starter into a multi-body board, though no recorded boards exist to confirm the median output. Survival comes from layered but thin interaction: three hand traps (Ash Blossom, Maxx C, Droll and Lock Bird) give a 0.394 chance of one going second, and four board-wide spells add breakers, while the Graveyard recursion routes let the deck rebuild after one disruption. Popularity and archetype usage did not earn points; the Gem-Knights usage stats were used only to flag the missing core cards Topaz and Lady Brilliant Diamond, and card scores were not averaged into the deck score. The score is capped by the absence of a side deck (no post-side plan), missing top-usage core cards, and the lack of any dated meta sample, so Meta Power stays provisional.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 61.9, Going First ≈ 65, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 57. Modifiers: no Side Deck (-3); missing_top_core_cards (-2); rock_non_rock_engine_conflict (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional): 0.80*61.9 + 0.20*57 - 6 = 54.9, rounded to 55

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.95 · key two-card combo ≈ — · full-brick estimate ≈ 0.05 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• High starter access: 0.949 chance of at least one archetype-core copy in an opening 5
• Compact 40-card Main Deck at the Master Duel minimum with 25 distinct cards
• Full Extra Deck (15/15) with high-ATK Fusion bosses and two link enablers
• Layered recursion from the Graveyard gives redundancy after one interruption
• Three hand traps plus four board-wide breakers cover both going-first and going-second disruption

Weaknesses

• No Side Deck at all, so no post-side plan in a best-of-3
• Missing two top-usage core cards (Topaz, Lady Brilliant Diamond), so the list deviates from the archetype standard
• Eight tech cards that are dead when the opponent has no matching target, raising brick risk
• Only one hand trap is guaranteed by the opening 6 (0.394 for at least one)
• No recorded combo boards, so conversion and median output are text-only inference

Critical choke points

• The opening hand needs a Fusion spell (Brilliant Fusion, Gem-Knight Fusion, Dispersion, Absorb or Scatter) plus a Gem-Knight material to start the engine
• Lady Lapis Lazuli needs Gem-Knight Lapis specifically, which is a single-card dependency with 3 copies
• Dispersion and Scatter require non-Rock Gem-Knight targets, which narrows the Fusion options

Recommended changes

Evidence & confidence

• Verified: Legal in Master Duel: 40 Main, 15 Extra, 0 Side within size rules; Limited copy counts respected: Foolish Burial, Harpie's Feather Duster and Maxx C at 1 copy each; Droll and Lock Bird at 1 of 2; Extra Deck composition: 13 Fusion and 2 Link; Archetype core cards present: 8 of 19 listed (42.1%)
• Inferred: P(>=1 archetype-core copy in opening 5) = 0.949 and the 2-card bootstrap; Hand-trap access: P(>=1 hand trap in 6 going second) = 0.394; Recursion routes after one interruption; Brick risk from 8 tech cards; Going-second and median output estimates from text only
• Provisional: Format fit and matchup coverage (D13); Meta Power (null)
• 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 and starter rates): these signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied No Side Deck: post-side performance is unknown and the side dimension is scored as a gap Guide (Vietnamese, one snippet) is qualitative only; no section structure