Labrynth Deck #765497 — Yu-Gi-Oh! Master Duel

40 Main, 15 Extra, incl. Lilith, Lady of Lament x3, Big Welcome Labrynth x3, Dominus Impulse x3. Created Oct 14, 2026 by YGO Mod.

Created by: YGO Mod (20517634)

Created On: 10/14/2026

Official AI Deck Power Analysis

ComboConfidence: MediumEvaluated Oct 17, 2026

53± 6/ 100

Power Score

Structural 57

Reliability 54

Going First 60

Going Second 63

Deck — Deck Power Evaluation

Final Contextual Deck Power: 53/100 (±6 · Confidence: Medium)

Overall score	Value
Structural Deck Power	57
Going First	60
Going Second	63
Meta Power	provisional
Tournament Reliability	54

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

Legality

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

Identity & game plan

Win condition: Extra Deck Xyz/Fusion bosses (Arc Rebellion Xyz Dragon, Super Starslayer TY-PHON, Lady Labrynth) reached through a Normal Trap / Labrynth board; Trap-based interaction (hand traps, negations, Daruma board wipe) that buys time for the board
Turn 1 (going first): Set Big Welcome Labrynth or Welcome Labrynth on T1, then activate it on T2 to Special Summon a Labrynth monster; Lilith or Labrynth monsters build the board toward a Xyz or Fusion boss
Turn 2 (going second): Hold Infinite Impermanence and Maxx C as hand traps and Dominus Impulse as a negation, then pivot into the Labrynth engine once the opponent's play is blanked
Recovery: Recycle Normal Traps from the GY through Lady Labrynth, Lovely Labrynth, Stovie Torbie and Paleozoic Marrella to rebuild the Normal Trap engine
After siding: No side deck in Master Duel (side_count 0); there is no post-side plan to evaluate

Why it scores here

The deck opens a functional plan reasonably often: Big Welcome Labrynth and Lilith each have about a 34% chance of appearing in a 5-card opening hand, and at least one of the two about 58% (Inferred, hypergeometric). Its Normal Trap engine recurs through several GY-recursion effects, so it can rebuild after a disruption. Interaction density is high, with four hand-trap and negation effects plus Daruma as a board breaker, which carries the going-second score. Conversion is limited by a low monster count (9), the scarcity of Level 2 monsters for Opabinia and Onibimaru, and a Kitkallos that has no Tearlaments support in the list. The score comes from consistency, interaction and median output of the system; the Labrynth popularity in the usage statistics confirms the list is real but earned no points, and no card scores were averaged.

Dimension scores

#	Dimension	Score	Evidence
D1	Engine Accessibility & Consistency	62	P(at least one of Lilith or Big Welcome in 5 cards) ≈ 0.58 by hypergeometric estimate, with the engine needing a Normal Trap to resolve (Inferred)
D2	Opening-Hand Quality & Brick Management	48	31 of 40 Main cards are traps and only 9 are monsters, so many hands hold reactive cards with no monster to Normal Summon or set to start the engine (Inferred)
D3	Combo Conversion & Ceiling	58	Ceiling read from card text only: Normal Trap loops and Labrynth Special Summon chains into Xyz/Fusion bosses; no recorded boards to confirm (Inferred)
D4	Combo Floor & Median Output	45	Median output is unmeasured because combos_evidence has zero parseable boards; no empirical floor exists (Provisional)
D5	Interruption Resilience & Route Redundancy	62	Stovie Torbie, Paleozoic Marrella, Ariane and Lovely Labrynth recur monsters from the GY, giving several independent restart lines after interruption (Inferred)
D6	Resource Economy, Recovery & Grind	60	Lady Labrynth and Lovely Labrynth return Normal Traps from the GY to the field, which regenerates the spent resource pool (Inferred)
D7	End-Board & Interaction Quality	72	Infinite Impermanence, Maxx C, Dominus Impulse, Songs of the Dominators, Trap Holic and Dimensional Barrier give layered interaction across both turns (Inferred semantic read of card text)
D8	Going-Second & Board-Breaking Power	66	Four hand-trap copies reach a going-second hand with about 49% probability (hypergeometric), and Daruma can wipe a board (Inferred)
D9	Offensive Pressure & Closing Power	62	Boss ATK reaches 3000 (Arc Rebellion, Lady Labrynth) and 2900 (Super Starslayer, Lovely Labrynth), but these are hard to reach through the Level 8 and Xyz requirements (Verified stats, Inferred reach)
D10	Main Deck Efficiency & Flexibility	50	Compact 40-card list with three copies of most core cards, but 27 generic traps and 16.4% exact-name purity dilute the engine (Verified composition, Inferred efficiency)
D11	Extra Deck Efficiency & Coverage	42	Two Fusions are weak in this list: Tearlaments Kitkallos has no Tearlaments support and Allvain needs Normal monsters that are absent; the Xyz set depends on Level 2 and Level 4 materials (Inferred)
D12	Side Deck Adaptability	30	Master Duel has no side deck (side_count 0), so post-side adaptability cannot be measured (Provisional)
D13	Matchup Coverage & Format Fit	50	No tournament link or dated meta sample; the archetype share is not available, so format fit is neutral (Provisional)
D14	Pilotability & Error Tolerance	40	Multi-step Normal Trap timing, chain-response decisions and Level-specific Xyz summons demand considerable pilot skill (Inferred)

How the score was computed

Strategy profile: Combo. Structural ≈ 57, Going First ≈ 60, Going Second ≈ 63, Meta = provisional, Tournament Reliability ≈ 54. Modifiers: engine_conflicts (-2); unrecoverable_choke_point (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional); 0.80*56.8 + 0.20*54 - 3 = 53.2

Probability & combo summary

Opening a starter: P(≥1) ≈ 0.58 · 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

Four hand-trap and negation effects give going-second interaction
Normal Trap recursion through GY effects supports recovery
Boss ATK up to 3000 in the Extra Deck
Three copies of the core Labrynth traps raise access

Weaknesses

31 of 40 Main cards are traps, leaving only 9 monsters to start the engine
Level 2 monster scarcity for Opabinia and Onibimaru
Tearlaments Kitkallos has no Tearlaments support in the list
Exact-name archetype purity of 16.4%

Critical choke points

Lilith or Big Welcome Labrynth must be in hand for the engine to start (≈58% in a 5-card hand)
Normal Summon or set access to Lilith and Labrynth monsters

Recommended changes

Priority	Remove	Add	Reason
1	Tearlaments Kitkallos	A Level 2 monster that feeds Paleozoic Opabinia and Onibimaru, or a second Labrynth starter	Kitkallos has no Tearlaments or Aqua support in the list, and the Level 2 Xyz lines need more materials
2	One Dimensional Barrier	A monster that increases the starter count	Its negation targets only Ritual/Fusion/Synchro/Xyz/Pendulum monsters, which is narrow in a 9-monster deck (Inferred)

Evidence & confidence

Verified: Legal in Master Duel: 40 Main / 15 Extra / 0 Side; Maxx C and Tearlaments Kitkallos are Limited at 1 copy each, run at 1 copy; Composition: 31 traps, 9 effect monsters, 9 Xyz, 6 Fusion; Exact-name purity 16.4%; 22 usage-stat rows, 72.2% core present
Inferred: Starter access ≈ 0.58 by hypergeometric estimate; Interaction density and going-second strength from card text; Resilience from GY recursion text; Xyz and Fusion reach from level and material requirements
Provisional: Median output and floor (no recorded boards); Format fit and meta share (no tournament link); Post-side adaptability (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, game-level, brick/starter/OTK rates) — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied Normal Trap versus other trap subtype is not given in the evidence frame

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More Master Duel Info

Labrynth Breakdown