Stardust Bystial Deck #762621 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 33/100 (±10 · Confidence: Low)

• Primary strategy: Toolbox
• Secondary strategies: Stun, Midrange
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status: Illegal. 4 violation(s).

Identity & game plan

• Win condition: Synchro pressure from Extra-Deck boss monsters (Askaan, Chengying, Adamancipator Risen - Dragite, Ghoti of the Deep Beyond) after the hand-trap and Ghoti-recursion turns; Recovering Synchro material from the GY via Ghoti banish-and-revive text (Shif, Paces, Zep) to keep the board going
• Turn 1 (going first): Open a Ghoti or Fish starter with Abyss Shark, Lifeless Leaffish or Snopios, then Synchro into Askaan or Arionpos while holding hand traps for the opponent's first interaction
• Turn 2 (going second): Use a hand trap (Ash Blossom, Maxx C, Evenly Matched, or PSY-Framegear Gamma) to slow the opponent's first board, then rebuild through Ghoti recursion and Synchro into a boss
• Recovery: Banish Fish monsters from the GY to revive Shif, Paces or Zep, then re-Synchro through Ghoti Tuners and Stardust Dragon's GY-revival text
• After siding: Not applicable: Master Duel has no Side Deck and the deck runs zero side cards, so there is no post-side plan

Why it scores here

The deck is a hand-trap-heavy Synchro toolbox built around a Ghoti/Fish engine, with 13 hand traps and roughly 92% odds of at least one hand trap in a going-second six-card hand (Inferred hypergeometric estimate). It reliably opens interaction, and the Ghoti Tuners (Shif, Paces, Zep) recur through banish-and-revive text, which supports continuation after disruption. Its starter access is only moderate: the 6-copy Ghoti core has roughly a 58% chance of at least one card in a 5-card opening hand (Inferred), and the archetype-core proxy shows no combo data to confirm conversion. The Extra Deck (12 Synchro, 2 Link, 1 Xyz) gives several boss options, but the list spans six sub-archetypes with 0% exact-archetype purity and no recorded boards, so conversion is theoretical. The score was not derived from popularity or averaged card scores; it reflects the system's consistency, interaction density and recovery. The list is Illegal under the Master Duel copy limits (Maxx C, PSY-Framegear Gamma, and the two Forbidden cards Called by the Grave and Dimension Shifter), so the score is capped and is theoretical only.

Dimension scores

How the score was computed

Strategy profile: Toolbox 80 / Stun 20 (weights not applied for Stun; Toolbox table used alone). Structural ≈ 46, Going First ≈ 45, Going Second ≈ 52, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Banlist exposure (-6); Engine conflicts (-2); Illegal list (theoretical only) (-4). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional); theoretical only because the list is Illegal: 0.80*46.15 + 0.20*40 = 44.9, then modifiers total -12 = 32.9, rounded to 33

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.58 · key two-card combo ≈ — · full-brick estimate ≈ 0.42 (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 suite gives high going-second interaction odds (about 92% for one hand trap in six cards)
• Ghoti Tuners recur through banish and revive text, adding continuation after disruption
• Extra Deck is full with several 2700 to 3000 ATK boss Synchros

Weaknesses

• Illegal copy-limit violations: Forbidden cards and three Limited overages
• No recorded boards or combo data, so conversion is unverified
• Six sub-archetypes with 0% exact-archetype purity create engine conflicts
• No Side Deck, so no post-side plan

Critical choke points

• Starter access depends on the 6-copy Ghoti core, roughly 58% in an opening hand (Inferred)
• The Ghoti Tuner recursion chain depends on a Fish monster in the GY
• Extra Deck bosses need Tuners that are often hand traps, so a hand-trap play can leave the board without a Synchro

Recommended changes

Evidence & confidence

• Verified: Legality status Illegal with four copy-limit violations (Maxx C, Called by the Grave, PSY-Framegear Gamma, Dimension Shifter); Main 40, Extra 15, Side 0; Master Duel size rules satisfied; 13 hand traps and 16 tech cards by role-tag count; Archetype purity 0% exact name; 55 off-archetype copies
• Inferred: Opening-hand starter access about 58% and brick rate about 42% (hypergeometric proxy); Going-second hand-trap odds about 92%; Interaction density high from hand-trap and negation text; Combo ceiling and median are text-inferred only because no boards were recorded
• Provisional: Meta Power is null: no dated metagame sample supplied; Matchup fit and format fit cannot be checked: no tournament link
• Data gaps: no combos supplied; combo floor, median and ceiling are text-only inference no tournament link; archetype meta-share and pilot match record absent no win-rate telemetry; going-first and going-second splits are Inferred Meta Power is provisional without a dated metagame sample no side deck; post-side adaptability cannot be measured no guides attached for the archetype