Synchron Deck #773121 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Medium)

• Primary strategy: Toolbox
• Secondary strategies: Combo, Control
• Format: ocg

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Extra Deck boss from Blue-Eyes, Bystial or Stardust lines (Blue-Eyes Ultimate Spirit Dragon, Neo Blue-Eyes Ultimate Dragon, Bystial Dis Pater, Stardust Sifr) enabled by hand-trap interaction and Mulcharmy draw support; Blue-Eyes Spirit Dragon and Blue-Eyes Tyrant Dragon beatdown through Blue-Eyes White Dragon and Sage with Eyes of Blue Tuner access
• Turn 1 (going first): Open a Tuner or Normal Summon starter (Sage with Eyes of Blue, Maiden of White, Mulcharmy Fuwalos or Purulia), use Wishes for Eyes of Blue or Mausoleum of White to find the Tuner and Blue-Eyes material, and hold Ash Blossom, Infinite Impermanence or Effect Veiler for the opponent's first answer
• Turn 2 (going second): Use hand traps (Ash Blossom, Droll & Lock Bird, Effect Veiler, Nibiru, Solemn Judgment or Warning) to break the opponent's first Summon, then rebuild through Mulcharmy draws and the Blue-Eyes or Bystial recursion routes
• Recovery: Mulcharmy draw effects, Pot of Sloth, Branded Regained, and recursion from the GY through Bystial Druiswurm, Bystial Magnamhut and Bystial Saronir
• After siding: No Side Deck is registered (side_count 0), so there is no post-side plan; D12 is scored on that basis

Why it scores here

The deck is scored as a system: it has 11 hand traps, 20 removal-text cards, three Solemn-style negates and a Blue-Eyes plus Bystial plus Mulcharmy draw-and-summon base, which gives it real interaction and a credible late-game boss suite in the Extra Deck. Its weakness is the engine glue: Blue-Eyes, Bystial, Mulcharmy and Branded pieces share few starters, the archetype-core probability is only about 0.32 in a five-card hand, and the proxy full-brick rate is about 0.68, so the floor is unreliable. No combo boards or win-rate telemetry were supplied, so the ceiling and median are text-only inferences. The list is Illegal (three Ash Blossom and three Bystial Lubellion against OCG copy limits of two and one), which caps the final score despite a Structural estimate of about 54; popularity and the archetype label 'Synchron' earned no points, since exact-name purity is 0%.

Dimension scores

How the score was computed

Strategy profile: Toolbox. Structural ≈ 54, Going First ≈ 50, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: banlist exposure (-6); illegal list cap (0). Final formula: No reliable metagame: 0.80*Structural(54) + 0.20*TournamentReliability(42) = 51.6; modifiers -6 (banlist exposure) give 45.6; capped to 30 because the list is Illegal (over-limit copies)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.25 · key two-card combo ≈ — · full-brick estimate ≈ 0.68 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Eleven hand traps and ten negation-text cards give high interaction density
• Three Extra Deck boss routes (Blue-Eyes, Bystial, Stardust) with strong closing stats
• Mulcharmy and Pot of Sloth draw support for refuelling

Weaknesses

• Illegal copy counts for Ash Blossom and Bystial Lubellion
• Weak engine glue: sub-archetypes share few starters
• No Side Deck, so no best-of-3 adaptation
• No combo telemetry or meta sample, so floor and matchups are unmeasured

Critical choke points

• Archetype core P(none in 5-card hand) ≈ 0.68 leaves hands without an engine starter
• Bystial lines depend on LIGHT or DARK targets in the GY, which many hands will not have early

Recommended changes

Evidence & confidence

• Verified: Main 55 / Extra 15 / Side 0 sizes against OCG size rules; Ash Blossom 3 copies vs legal 2; Bystial Lubellion 3 copies vs legal 1; Hypergeometric probabilities from the evidence pack
• Observed: Guide snippet describes the deck as brick-prone and unstable (community comment)
• Inferred: Consistency, brick rate and starter reliance estimates; Going-first and going-second split reads from hand-trap composition; Interaction density from card text
• Provisional: Meta Power and matchup fit (D13) with no dated sample
• 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, matchups, brick or starter rates No Side Deck registered Meta Power is Provisional unless a dated metagame sample is supplied