Gem-Knights Deck #769728 — Yu-Gi-Oh! OCG

40 Main, 16 Extra, incl. Darklord Djehuty x3, Refrain the Melodious Songstress x3, Gem-Knight Dispersion x3. Created Oct 20, 2026 by YGO Mod.

Deck Gem-Knights OCG

Created by: YGO Mod (20517634)

Created On: 10/20/2026

 
 


Official AI Deck Power Analysis
MidrangeConfidence: LowEvaluated Oct 20, 2026
20± 6/ 100
Power Score
Structural 42
Reliability 35
Going First 42
Going Second 38

Deck — Deck Power Evaluation

Final Contextual Deck Power: 20/100 (±6 · Confidence: Low)

Overall score Value
Structural Deck Power 42
Going First 42
Going Second 38
Meta Power provisional
Tournament Reliability 35
  • Primary strategy: Midrange
  • Secondary strategies: Toolbox, FTK / Alternate-Win
  • Format: ocg

Legality

Main 40 / Extra 16 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

  • Win condition: Fusion and Link pressure from Gem-Knight and Darklord Extra Deck monsters, backed by Power Patron and Melodious boss monsters (theoretical, structural read only); Vidolium the Unstable Power Patron of Unity 5000 ATK and Darklord Morningstar / Eveningstar 3000 ATK bodies
  • Turn 1 (going first): Open a Gem-Knight searcher with Gem-Knight Dispersion or Gem-Knight Nepyrim, then Fusion Summon from the Extra Deck; hand traps are held for the opponent's turn
  • Turn 2 (going second): Ash Blossom, Herald of Orange Light, Maxx C and Droll & Lock Bird as the interaction layer, with Gem-Knight Hollowcore and Quartz as bodies
  • Recovery: Gem-Knight Fusion and Brilliant Fusion recur from the GY; Banishment of the Darklords and Darklord Dance refill the hand
  • After siding: Not assessable: the list has no Side Deck (0 cards), so there is no post-side plan

Why it scores here

This list is illegal in OCG: it runs one copy of Saryuja Skull Dread, which is Forbidden, and its Extra Deck holds 16 cards against a limit of 15. Under the rubric it therefore gets only a capped, structural-only score. The main deck splits across three sub-archetypes (Gem-, Darklord and Melodious) with no exact-name core, so the engine has several starters but weak cohesion between them. Starter access is reasonable on paper (about 0.34 to open a copy-3 starter in five cards), but the 19 zero-level cards and the 18 spells push brick risk up. No combo boards, tournament link, or side deck were supplied, so the floor, median and ceiling are text-only inferences. Popularity and archetype standing did not earn points, and card scores were not averaged into the deck score.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 52 P(at least one copy-3 starter in opening 5) ≈ 0.34; Gem-Knight Dispersion and Nepyrim are the search and starter core (Inferred)
D2 Opening-Hand Quality & Brick Management 40 Heavy spell and zero-level count with multiple sub-archetypes raises dead-card risk; no hand-level data (Inferred)
D3 Combo Conversion & Ceiling 45 Ceiling is text-only: Fusion and Link recursion lines are visible in card text, but combos_evidence has 0 parseable boards (Inferred)
D4 Combo Floor & Median Output 40 Median output unknown; no recorded boards, so the floor is inferred from starter diversity alone (Inferred)
D5 Interruption Resilience & Route Redundancy 40 Two hand traps and several Fusion-recursion lines give some redundancy, but no independent second line is confirmed (Inferred)
D6 Resource Economy, Recovery & Grind 45 Recursion via Gem-Knight Fusion and Banishment of the Darklords is present in text; no resource data (Inferred)
D7 End-Board & Interaction Quality 42 Five hand traps plus Herald, Mirage Lights and Mediclius negation text; Forbidden Crown adds one-card negation (Inferred)
D8 Going-Second & Board-Breaking Power 40 Going-second split unavailable; board-breaking relies on Crossout Designator and Droll-style text read (Inferred)
D9 Offensive Pressure & Closing Power 50 Vidolium 5000 ATK, Morningstar and Eveningstar 3000 ATK bodies are real closing threats (Verified card text, Inferred use)
D10 Main Deck Efficiency & Flexibility 35 40 main with 27 distinct cards, 18 spells, 19 zero-level cards and three-of splashes across three archetypes reduce coherence (Verified composition)
D11 Extra Deck Efficiency & Coverage 50 Extra Deck is 16 cards, one over the OCG limit, with 9 Fusion and 7 Link monsters that all need specific materials (Verified composition)
D12 Side Deck Adaptability 10 No side deck at all, so no post-side adaptability exists (Verified, 0 side cards)
D13 Matchup Coverage & Format Fit 40 No tournament link, meta-share or dated sample; format fit is provisional (Provisional)
D14 Pilotability & Error Tolerance 35 Multi-archetype engine with several Extra Deck material chains and over-limit legality needs careful play (Inferred)

How the score was computed

Strategy profile: balanced. Structural ≈ 42, Going First ≈ 42, Going Second ≈ 38, Meta = provisional, Tournament Reliability ≈ 35. Modifiers: Illegal list cap (-8); Banlist exposure (-4). Final formula: Illegal cap: theoretical structural-only. Unclamped 0.80*Structural(42) + 0.20*TournamentReliability(35) = 40.6, with modifiers -12 gives 28.6; capped to 20 because the deck is Illegal (Forbidden card and Extra Deck over limit).

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.34 · 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 searcher text (20 cards) and a 0.98 chance of at least one searcher in five cards
  • Multiple negation and hand-trap options (Ash Blossom, Herald of Orange Light, Maxx C, Droll & Lock Bird, Herald of Mirage Lights)
  • High-ATK closers available in the Extra Deck (Vidolium 5000 ATK, Morningstar and Eveningstar 3000 ATK)

Weaknesses

  • Illegal list: a Forbidden card and an Extra Deck one over the OCG limit
  • Three archetypes with no exact-name core; only 0% exact Gem-Knight purity
  • No side deck, so there is no best-of-3 adaptation
  • 18 spells and 19 zero-level cards raise brick risk

Critical choke points

  • Extra Deck fusion materials, which are mostly one-of cards
  • Gem-Knight Fusion and Brilliant Fusion as the single Fusion route
  • Forbidden Saryuja Skull Dread must be removed before the list is playable
Priority Remove Add Reason
1 Saryuja Skull Dread a legal Link or Fusion monster that uses existing Extra Deck materials Forbidden in OCG; this is a legality fix, not a power choice.
2 one Extra Deck monster nothing (or a Fusion or Link already in the list) Extra Deck is 16 against a limit of 15; cut one to make the list legal.
3 one of the three sub-archetype splashes (Melodious or Darklord) additional copies of Gem-Knight core cards (Dispersion, Nepyrim) Raises exact-name purity and starter consistency.

Evidence & confidence

  • Verified: Illegal status: Saryuja Skull Dread (Forbidden) run 1 copy; Extra Deck 16 vs OCG limit 15; Main 40 with 27 distinct cards; 18 Spells; 19 zero-level; No side deck (0 cards); Hypergeometric: copy-3 at least one in hand5 = 0.3376
  • Inferred: Starter consistency and brick rate; Floor, median and ceiling estimates; Interaction density from card text (5 hand traps, 7 negation texts); Going-second and recovery plans
  • Provisional: Meta Power (no dated metagame sample); Matchup fit and format fit
  • 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 (going-first/second, matchup, brick/starter rates) Meta Power is Provisional unless a dated metagame sample is supplied No side deck, so post-side performance cannot be assessed

More OCG Info

Gem-Knights

Gem-Knights Breakdown

 
 

 

 

 

 

 

 
 

 

 
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