Labrynth Deck #696285 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 55/100 (±6 · Confidence: Medium)

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

Legality

Main 42 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Link and Synchro beaters (Chaos Angel 3500, Unchained Soul Lord, Unchained Abomination 3000) and Lady/Lovely Labrynth 2900-3000 ATK attackers, reached after Normal Trap-driven negation and removal leave the opponent without a clean board.; Trap-chain value from Labrynth recursion (Cooclock, Torbie, Chandraglier, Ariane) that grinds card advantage over several turns.
• Turn 1 (going first): Set Normal Traps and Labrynth monsters on turn 1 (Arianna or Ariane search and Set a Normal Trap), hold Trap Holic, Dominus Impulse and Songs of the Dominators as interaction, and extend into a Link Summon if the opponent commits a board.
• Turn 2 (going second): Use Droll & Lock Bird or Maxx "C" in response to the opponent's first draw or Special Summon, then negate the first real play with Dominus Impulse or Songs of the Dominators and rebuild through Labrynth monsters that return from the GY.
• Recovery: Recycle Normal Traps from the GY through Lovely/Lady Labrynth and Labrynth Cooclock, search Labrynth Trap/monster cards with Arianna or Unchained Soul Lord (text-confirmed), and keep one Extra Deck link route open.
• After siding: Master Duel has no side deck slot (Side Deck size 0); no post-side plan exists, so there is no post-side adaptation in this format.

Why it scores here

The deck opens a functional plan reliably at the archetype level: the 27 Labrynth-core copies are at least one in the opening hand 99.7% of the time, and searcher text is at least one in a 5-card hand about 72% of the time (Inferred, hypergeometric). Its real strength is interaction density on the system, with eight negation-text cards, Dominus Impulse, Songs of the Dominators, Trap Holic, Dimensional Barrier, Transaction Rollback and Trap Trick, layered across Droll & Lock Bird and Maxx "C" as hand traps. The Extra Deck (11 Link, 2 Synchro, 2 Xyz) gives high-ATK closers, but no recorded boards exist, so conversion and median output rest on text and a single guide snippet that describes the deck as a control list. Popularity and archetype usage confirm the list is real and accessible but did not earn points on their own, and card scores were not averaged into the deck score. The score is held down by the diluted engine (33% exact-name Labrynth purity across Unchained, Dominus, Chaos and Toy copies), 24 Trap slots that can brick without a monster, and the absence of any combo, tournament, or side-deck data.

Dimension scores

How the score was computed

Strategy profile: Control primary, Stun secondary (interaction-led; blend not disclosed in weights as a numeric ratio, primary profile used). Structural ≈ 58.2, Going First ≈ 60, Going Second ≈ 56, Meta = provisional, Tournament Reliability ≈ 52. Modifiers: Engine dilution / archetype spread (-2); Unverified combo ceiling (0). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.72 · 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: eight negation-text cards across hand traps, Normal Traps and Lady/Lovely protection.
• Core Labrynth copies are almost always present in the opening hand, giving a reliable starting engine.
• Compact 42-card main with a 3-copy core and a clean Extra Deck split (11 Link, 2 Synchro, 2 Xyz).
• Recursion of Normal Traps and Labrynth monsters from the GY gives card advantage over a long round.

Weaknesses

• Trap-heavy main (24 of 42) with no board until a Labrynth monster or Set card is live, so dead-card risk is real.
• Diluted engine: only about a third of the copies are exact-name Labrynth; Dominus, Unchained, Chaos and Toy copies compete for slots.
• No combo, tournament, or matchup evidence, so floor and median output cannot be measured.
• No side deck in Master Duel, so no post-side adaptation.

Critical choke points

• Turn 1 depends on one Labrynth searcher or Set monster; without Arianna, Ariane or Cooclock the opening is mostly Set traps.
• Negation chains depend on Normal Trap timing, so a single disrupted Set trap can lose the response window.
• Extra Deck route depends on the Link summon sequence; Unchained Soul Lord and Unchained Abomination are the main closers.

Recommended changes

Evidence & confidence

• Verified: Legal status: 42 Main, 15 Extra, 0 Side within Master Duel limits; Maxx "C" Limited at 1 copy, Droll & Lock Bird Semi-Limited at 2 copies.; Extra Deck breakdown is 11 Link, 2 Synchro, 2 Xyz, matching the card list.; Card text and ATK/DEF values match the resolved card list.
• Observed: Usage statistics: Big Welcome Labrynth, Dominus Impulse and Destructive Daruma are core cards in 84-92% of archetype decks; this deck runs them all.
• Inferred: Opening-hand starter and searcher probabilities (hypergeometric, Main Deck only).; Interaction density and going-second hand-trap coverage from card text.; Turn-1 and turn-2 plans, recovery plan, and combo ceiling/floor read from card text.
• Provisional: Meta Power (null) and the matchup/format fit dimension (D13) pending a dated Master Duel meta sample.; Side-deck dimension (D12) for a format with no side deck.
• 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/starter rates) Meta Power is Provisional unless a dated metagame sample is supplied deck title is null; deck identity rests on archetype and card list usage statistics marks Super Starslayer TY-PHON - Sky Crisis as not in this deck (in this deck false), but the card list shows 2 copies in the Extra Deck; the discrepancy was not resolved and the card list was trusted usage statistics lists Dominus Spark and Infinite Impermanence as missing core cards; no direct evidence on how they affect the list