Labrynth Deck #762666 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)

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

Legality

Main 50 / Extra 15 / Side 0 — status: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Plunder Patroll and Labrynth Extra Deck summons (Blackbeard, Plunder Patrollship Lys/Moerk/Jord/Brann, Chaos Angel) converting board advantage into attacks; no recorded combo line to confirm it; Kashtira Fenrir and Lady Labrynth of the Silver Castle as 2400-3000 ATK beaters
• Turn 1 (going first): Open a Labrynth or Plunder Patroll starter and set Welcome Labrynth / Big Welcome Labrynth; use Maxx C and Hand traps to keep a clean board for a T2 Extra Deck summon (Inferred)
• Turn 2 (going second): Use hand traps (Ash Blossom, Infinite Impermanence, Evenly Matched, Nibiru) to stop the opponent's first summon chain, then rebuild through Labrynth Normal Trap loops (Inferred)
• Recovery: Labrynth Chandraglier and Labrynth Stovie Torbie recur from GY via Normal Trap activations; Plunder Patroll monsters recur via Blackeyes and Redbeard (Inferred from text)
• After siding: No side deck is registered, so no post-side plan exists; best-of-3 adaptation is unavailable

Why it scores here

The deck is Illegal in master-duel: Called by the Grave (Forbidden) is run twice and Maxx C (Limited, 1 legal copy) is run three times, so the score is a theoretical, structural-only read capped at 20 and is not a normal contextual score. Structurally the list splits its engine across two sub-archetypes: exact Labrynth copies are only 18 of 65 archetype-related copies (27.7% exact-name purity), with 23 Plunder Patroll copies. Opening access to the core is good (P(at least one Labrynth/Plunder Patroll core card in a 5-card hand) about 0.93, Inferred), but there are no recorded boards, so the ceiling and median output are unmeasured and not averaged from card scores. Interaction density is high from 13 hand traps and 10 negation-text cards, which is the main strength, while the 16 tech cards and the absence of a side deck pull efficiency and adaptability down. Popularity of the Labrynth archetype in the usage stats confirms the core is real but does not add power points.

Dimension scores

How the score was computed

Strategy profile: Balanced (default, strategy unclear). Structural ≈ 47, Going First ≈ 45, Going Second ≈ 50, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: banlist exposure (-12); Illegal cap (0). Final formula: Illegal cap applied: unconstrained 0.80*Structural(47) + 0.20*TournamentReliability(40) = 46, modifiers -12 gives 34, then capped at 20 for an Illegal list (theoretical/structural-only); Meta provisional

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.93 · key two-card combo ≈ — · full-brick estimate ≈ 0.07 (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 coverage (13 hand traps, 10 negation-text cards)
• Core Labrynth/Plunder cards are accessible in the opening hand (about 0.93)
• Extra Deck covers link, synchro, xyz and fusion access routes

Weaknesses

• Illegal in master-duel: Forbidden Called by the Grave x2 and Limited Maxx C x3 over the copy limit
• Engine split across Labrynth and Plunder Patroll (27.7% exact purity)
• No side deck; no post-side adaptation
• No recorded boards, so output and ceiling are unmeasured

Critical choke points

• Forbidden and Limited banlist cards must be removed before the deck is playable
• A single Plunder Patroll or Labrynth starter in hand is the T1 gate

Recommended changes

Evidence & confidence

• Verified: Deck is Illegal in master-duel: Called by the Grave (Forbidden, 2 copies) and Maxx C (Limited, 3 copies vs 1 legal); Main 50 / Extra 15 / Side 0 are within the master-duel size rules; Exact Labrynth name purity 27.7% (18 of 65 archetype-related copies); No side deck and no tournament link are present in the export
• Observed: Labrynth archetype core usage stats are present (about 85% inclusion for the core Labrynth cards)
• Inferred: Opening access to the core is about 0.93 from the hypergeometric proxy; Going-second hand-trap coverage is about 0.85 for at least one hit; Recursion and Normal Trap loop lines derived from card text; Interaction density rated high from role tags and negation text
• Provisional: Meta Power is null: no dated metagame sample; Matchup fit (D13) is provisional: no tournament or matchup data
• Data gaps: no combos supplied; 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 and brick rates are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied no side deck registered; post-side dimensions are unscored from data deck title is null