Synchron Deck #770027 — Yu-Gi-Oh! OCG

43 Main, 15 Extra, incl. Junk Meister x3, Fydraulis Harmonia x3, Ghost Ogre & Snow Rabbit x3. Created Oct 20, 2026 by YGO Mod.

Deck Synchron OCG

Created by: YGO Mod (20517634)

Created On: 10/20/2026

 
 


Official AI Deck Power Analysis
MidrangeConfidence: LowEvaluated Oct 20, 2026
35± 6/ 100
Power Score
Structural 55
Reliability 45
Going First 52
Going Second 60

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±6 · Confidence: Low)

Overall score Value
Structural Deck Power 55
Going First 52
Going Second 60
Meta Power provisional
Tournament Reliability 45
  • Primary strategy: Midrange
  • Secondary strategies: Toolbox
  • Format: ocg

Legality

Main 43 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

  • Win condition: Synchro boss monsters from the Extra Deck (Majestic Star Dragon, Bystial Dis Pater, Kewl Tune B2B, Ekhajar) reached through Tuner-based Synchro Summons; Stardust Dragon / Accel Synchro Stardust Dragon board presence with Junk and Synchron tuners
  • Turn 1 (going first): Normal Summon a Tuner (Junk Synchron or Jet Synchron), search with Junk Meister or Assault Sonic Warrior, then Synchro Summon into a Level 8-10 boss while holding Ash Blossom or Droll & Lock Bird
  • Turn 2 (going second): Hold 10 hand traps (Ash Blossom, Maxx C, Infinite Impermanence, Ghost Ogre, Droll & Lock Bird) to break the opponent's first Summon, then rebuild a Synchro board from the remaining hand
  • Recovery: Searchers (12 copies of searcher text) and Jet Synchron recursion from the GY refill hand after an interaction exchange
  • After siding: Not evaluable: the deck runs no Side Deck (0 cards), so there is no post-side plan

Why it scores here

The score reflects the deck as a system: a Tuner-heavy Synchron/Junk engine with 12 searcher effects and 10 hand traps gives it a reasonable chance of an early Synchro Summon and strong interaction on both turns, and its Extra Deck of 3000-3800 ATK boss monsters gives it real closing power. The engine is fragmented, however: only 3 copies use the exact 'Synchron' archetype name (about 5 percent purity), and most tuners and Extra Deck monsters come from unrelated sub-archetypes, which lowers consistency and brick resistance. No recorded boards exist, so the combo ceiling and median are text-based inferences only (Inferred). Archetype popularity was not credited, and card scores were not averaged. The deck has no Side Deck, which caps adaptability, and it runs one Forbidden card, so it is scored as a theoretical, structural-only evaluation and capped low.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 55 P(>=1 Junk Synchron in opening 5) about 0.22 for 2 copies; 12 searcher-text cards give P(>=1) about 0.82; engine is spread over several sub-archetypes (Inferred)
D2 Opening-Hand Quality & Brick Management 50 Many Tuners are weak without the right partner; 18 Tuners and 3 copies of several Synchron cards raise redundancy but also dead-draw risk; hand-trap-heavy hands can lack a starter (Inferred)
D3 Combo Conversion & Ceiling 50 No parseable boards in combo data; the ceiling is inferred from Level 8-10 Synchro bosses and searcher chains (Inferred)
D4 Combo Floor & Median Output 40 No combo aggregates; median is a text-only inference, lower than the ceiling because many starters need specific partners (Inferred)
D5 Interruption Resilience & Route Redundancy 60 10 hand traps plus Jet Synchron GY recursion and independent Ash Blossom / Droll / Maxx C lines give multiple routes after an interruption (Inferred)
D6 Resource Economy, Recovery & Grind 58 12 searcher-text cards and Jet Synchron GY recursion refill hand; Synchro Fellowship adds card advantage (Inferred)
D7 End-Board & Interaction Quality 75 Ash Blossom, Ghost Ogre, Infinite Impermanence, Maxx C, Droll & Lock Bird, Crossout Designator and Majestic Star Dragon negate or destroy across turns (verified text, Inferred quality)
D8 Going-Second & Board-Breaking Power 68 10 hand traps; P(>=1 hand trap in opening 6) about 0.82 when going second; Majestic Star Dragon and Bystial Dis Pater can answer a board (Inferred)
D9 Offensive Pressure & Closing Power 70 Majestic Star Dragon 3800 ATK, Bystial Dis Pater 3500 ATK, Kewl Tune B2B 3200 ATK and Ekhajar 3000 ATK provide strong closing bodies (verified stats, Inferred conversion)
D10 Main Deck Efficiency & Flexibility 45 43 Main Deck cards with 28 distinct names, a wide Level spread and many single-copy tuners; the archetype is spread thin (Inferred)
D11 Extra Deck Efficiency & Coverage 60 15 Synchro monsters spread across Majestic, Stardust, Bystial, Rose, Scrap and Ice Barrier with no clear core, so the Extra Deck is powerful but not focused (Inferred)
D12 Side Deck Adaptability 10 The deck runs no Side Deck (0 cards); no post-side plan can be scored (Verified count, Provisional)
D13 Matchup Coverage & Format Fit 45 No tournament link and no dated metagame sample, so matchup fit is provisional and based on the OCG card pool only (Provisional)
D14 Pilotability & Error Tolerance 50 Multi-step Synchro chains with many branching Tuner choices; manageable for an experienced pilot but error-prone (Inferred)

How the score was computed

Strategy profile: Midrange. Structural ≈ 55, Going First ≈ 52, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist exposure (-8); no Side Deck (-4). Final formula: 0.80*Structural(55) + 0.20*TournamentReliability(45) = 53; context modifiers -12 gives 41; Illegal-deck cap applied, final 35 (theoretical/structural-only); Meta Power provisional/null

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.22 · 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 interaction suite: 10 hand traps and 15 negation-text cards
  • Strong Extra Deck bodies at Level 8-10 (Majestic Star Dragon, Bystial Dis Pater, Kewl Tune B2B)
  • 12 searcher-text cards and Jet Synchron recursion support consistency and recovery

Weaknesses

  • Extremely low archetype purity (about 5 percent exact name); the engine spans several sub-archetypes
  • Contains a Forbidden card (Baronne de Fleur) and four Limited cards
  • No Side Deck, so no post-side plan
  • No recorded combos, so the power ceiling is unverified

Critical choke points

  • Tuner availability: several Synchro lines need a specific Tuner (Junk Synchron x2 is about 22 percent in opening 5)
  • Opponent answering the first Synchro boss with a single removal or board breaker
Priority Remove Add Reason
1 Baronne de Fleur Any legal Level 8-10 Synchro boss from the same engine The Forbidden card makes the list illegal; replacing it is required before any real-world use
2 One copy of Crossout Designator A legal Synchron or Junk Side Deck card set (up to 15) A 0-card Side Deck removes all post-side adaptation; add 10-15 cards for a best-of-3 plan
3 One off-archetype Tuner (for example Starjunk Synchron or Golden Cloud Beast - Malong) A second copy of Synchron Carrier or Assault Synchron Raises exact-archetype purity and makes the Synchron engine more reliable

Evidence & confidence

  • Verified: Illegal status: Baronne de Fleur is Forbidden in OCG, 1 copy run; Main 43 / Extra 15 / Side 0 satisfy OCG size rules; Limited and Semi-Limited copy limits (Maxx C, Droll & Lock Bird, Crossout Designator, Reinforcement of the Army, Ash Blossom 2 copies); Card text and stats for all listed cards; Exact-name archetype purity 5.2 percent
  • Observed: Usage stat: Droll & Lock Bird in 53 percent of archetype lists; Mulcharmy Fuwalos missing from this list
  • Inferred: Starter reliability and brick rate from hypergeometric draws; Interaction quality from negation and removal text; Structural scores and going-first/going-second splits
  • Provisional: Meta Power (no dated metagame sample); Matchup fit (D13); Post-side plan (no 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/second, matchup, or brick/starter rates Meta Power is provisional without a dated metagame sample No Side Deck cards to evaluate post-side plan

More OCG Info

Synchron

Synchron Breakdown

 
 

 

 

 

 

 

 
 

 

 
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