Junk Deck #772730 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

• Primary strategy: Combo
• Secondary strategies: Stun, Midrange
• Format: ocg

Legality

Main 45 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Synchro Summon a Junk or Stardust boss (Junk Warrior Extreme, Stardust Sifr Divine Dragon, Shooting Quasar Dragon) off a Junk Synchron or Scrap Synchron Tuner plus non-Tuner material; Stardust Warrior / Accel Synchro Stardust Dragon boards backed by Synchro Emergency and hand-trap interaction
• Turn 1 (going first): Normal Summon Junk Synchron or Tuning to search and set up the Junk Warrior engine, then Synchro Summon a boss; hold Ash Blossom or Effect Veiler as protection
• Turn 2 (going second): Use hand traps (Infinite Impermanence, Effect Veiler, Ash Blossom) to break the opposing board, then rebuild a Synchro Summon from the GY through Junk Synchron's Graveyard special summon
• Recovery: Tuner and Synchro monsters recurse from the Graveyard (Junk Synchron, Starjunk Synchron, Crossroad Sonic Chick) and Junk Armor offers an extra Special Summon route
• After siding: None: the list runs no Side Deck, so there is no post-side plan

Why it scores here

The deck's engine opens reliably only through the archetype core: P(at least one Junk Synchron in a 5-card opening hand) is about 0.21, so the T1 starter is far from guaranteed even though 14 archetype-core cards give about 0.86 odds of some core card. Its real strength is interaction density, with 9 hand traps and 16 negation-text cards that stay live on both turns and give the deck a strong going-second profile. The closing power comes from Junk Warrior Extreme, Stardust Sifr and Shooting Quasar as Extra Deck bosses. The score is not an average of card scores and does not reward the Junk archetype's popularity. It is capped low because Ash Blossom & Joyous Spring runs 3 copies against a Semi-Limited limit of 2, which makes the list Illegal and the result theoretical and structural-only.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 49.6, Going First ≈ 42, Going Second ≈ 48, Meta = provisional, Tournament Reliability ≈ 35. Modifiers: banlist exposure (-8); no side deck (-3). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (-11) = 35.7, capped at 30 because the list is Illegal; Meta provisional

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.21 · 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 hand-trap and negation package (9 hand traps, 16 negation-text cards) that stays live on both turns
• Multiple Tuner routes and GY recursion give redundancy after a single answer
• High-ceiling Extra Deck bosses (Junk Warrior Extreme, Stardust Sifr, Shooting Quasar)

Weaknesses

• Starter access is low: P(Junk Synchron in opening 5) = 0.21
• Illegal copy count on Ash Blossom & Joyous Spring
• No side deck, so there is no adaptation plan
• Low exact-name archetype purity (16.7%) and many generic off-theme cards

Critical choke points

• Junk Synchron and Scrap Synchron (2 copies each) are the main Tuner starters, so an opening hand without them stalls the engine
• Ash Blossom & Joyous Spring copy count must drop to 2 before the list can be treated as legal

Recommended changes

Evidence & confidence

• Verified: Illegal status: Ash Blossom & Joyous Spring 3 copies vs legal limit 2 (OCG Semi-Limited); Main 45, Extra 15, Side 0 within OCG size rules; Limited cards One for One, Reinforcement of the Army and Synchro Overtake each run 1 copy (legal); Extra Deck is 15 Synchro monsters
• Inferred: Starter access: P(Junk Synchron in opening 5) = 0.21; Hand-trap density gives strong going-second interaction; Ceiling read from card text; no recorded boards
• Provisional: Meta Power is null: no dated metagame sample; Format fit (D13) with no 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 (going-first/second, matchup, brick and starter rates) Meta Power is provisional without a dated metagame sample No Side Deck, so no post-side evidence