Stardust Bystial Deck #757435 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 57/100 (±7 · Confidence: Medium)

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

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Fusion Summon a 3000-ATK boss (Dracotail Arthalion, Mysterion, Red-Eyes Dark Dragoon, Mirrorjade, The Dragon that Devours the Dogma) from Fusion Deployment, Ketu, Mululu, Faimena, Super Polymerization or Rahu starts, then convert the board into direct pressure.; Albaz Dragon route: Fallen of Albaz plus Guiding Quem / Branded Lost / Fallen & Virtuous access to Lubellion, Alba-Lenatus, Titaniklad and Mirrorjade.
• Turn 1 (going first): Open with a Fusion starter (Fusion Deployment, Ketu, Mululu, Faimena or Rahu) and summon a Fusion Monster from the Extra Deck; keep Dracotail recursion (Phryxul, Faimena) and Dracotail Flame/Horn/Sting for disruption.
• Turn 2 (going second): Use Ash Blossom and the trap/spell interaction (Crossout Designator, Dracotail Flame/Horn/Sting) to slow the opponent's first board, then rebuild through Fusion Summons from the hand.
• Recovery: Recover through GY-triggered Dracotail effects (Phryxul sends a Dracotail back to the field, Urgula/Pan/Gulamel set or destroy from GY-sent material) and Dracotail Flame/Horn/Sting draw-and-recycle effects.
• After siding: Not applicable: the deck has no Side Deck (side_count 0) and Master Duel has no best-of-3 sideboarding, so there is no post-side plan.

Why it scores here

The deck is legal (40 Main, 15 Extra, no side, all restricted cards within their copy limits) and its Fusion-starter density is the main reason it scores at all: about 15 Main Deck copies that can start a Fusion line give roughly a 0.92 chance of at least one starter in a 5-card opener (Inferred hypergeometric estimate). Consistency is held back by several overlapping packages (Dracotail, Albaz Dragon, Bystial, Despia, Branded), a single-copy Fallen of Albaz that gates five Extra Deck fusions, and no recorded boards, so the ceiling and median are text-based inferences. Board-ending power is the strongest part, since several Extra Deck bosses sit at 3000 ATK and some have direct-damage or piercing text, while interaction is real but thin (Ash Blossom at two copies, plus a handful of backrow and negation cards). The score comes from consistency, output and interaction assessed on the whole system; it does not come from the archetype being popular, which the usage data does not support here, and it is not an average of card scores.

Dimension scores

How the score was computed

Strategy profile: Combo table used; Midrange noted as secondary strategy only (not blended into weights). Structural ≈ 64, Going First ≈ 66, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 58. Modifiers: banlist_exposure (-2); single_choke_point (-2); engine_spread (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional): 0.80*64 + 0.20*58 - 6 = 56.8 → 57

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.92 · 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

• Legal, compact 40-card Main with 15 Extra and a clear Fusion engine
• Roughly 15 Fusion-starter copies give high opening-hand access
• Multiple 3000-ATK Extra bosses with damage or piercing text
• Redundant GY recursion (Phryxul, Faimena) and draw-and-recycle traps (Flame, Horn, Sting)

Weaknesses

• Declared archetype (Stardust Bystial) has 0 exact copies; the list is a Dracotail/Albaz/Bystial hybrid
• Fallen of Albaz is a single copy gating five Extra Deck bosses
• King of the Swamp's search target (Polymerization) is not in the list, so its discard effect has no target
• Thin interaction: only two Ash Blossom copies as hand traps
• No Side Deck and no best-of-3 plan

Critical choke points

• Fallen of Albaz (1 copy) gating Alba-Lenatus, Mirrorjade, Lubellion the Searing Dragon, Titaniklad and The Dragon that Devours the Dogma
• A Fusion starter must land on T1-T2 going first; a hand without one is a Fusion brick

Recommended changes

Evidence & confidence

• Verified: Legal: 40 Main, 15 Extra, 0 Side, no size or copy-limit violations; Banlist status per restricted card (Limited / Semi-Limited) and copies run; Card text and stats for the listed cards; Fallen of Albaz is a single copy and Polymerization is not in the list
• Observed: Usage stat: Ash Blossom at 75% inclusion for the declared archetype (archetype-level only)
• Inferred: P(>=1 Fusion starter in opener) ≈ 0.92 (hypergeometric, about 15 copies); Ceiling and median output from card text (no recorded boards); Interaction density (Ash, Crossout, Flame, Horn, Sting, Magnamhut/Druiswurm) from card text; Pilotability from the number of optional and branching Fusion steps
• Provisional: Meta Power (no dated metagame sample supplied); Matchup and format fit (no tournament context); Side-deck adaptability (no Side Deck in Master Duel format)
• Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN — going-first/second, matchup, brick and starter rates are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied declared archetype (Stardust Bystial) does not match the list's dominant sub-archetypes; usage stats describe the declared archetype, not this list