K9 Deck #773596 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 58/100 (±7 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: K9 Xyz boss beats: K9-X Werewolf (3300 ATK, multi-attack with materials) and K9-X Ripper/M (3100 ATK, piercing), supported by Divine Arsenal AA-ZEUS and Umbral Horror Masquerade (Inferred from card text).; Hand-trap and negate attrition: Ash Blossom, Infinite Impermanence, Droll & Lock Bird, Ghost Ogre and Maxx C slow the opponent until a K9 Xyz can take the board (Inferred).
• Turn 1 (going first): Search with A Case for K9 or Chaotic Elements, then Normal Summon K9-17 Izuna or K9-04 Noroi without tribute while the opponent holds 2 or more cards, and build toward a K9 Xyz via K9-X Forced Release or K9-LC Release Restraint (Inferred from card text).
• Turn 2 (going second): Hold 2-3 hand traps (Ash, Impermanence, Droll, Ghost Ogre, Maxx C) to answer the opponent's first starter, then rebuild a K9 Xyz from the Lantern/Jokul/Izuna line (Inferred).
• Recovery: K9 searchers (A Case for K9, Chaotic Elements, K9-66a Jokul, K9-66b Lantern) and Mulcharmy draw effects refill the hand after a board is removed (Inferred).
• After siding: No side deck exists in Master Duel (side 0), so there is no post-side plan; the rubric's D12 is scored structurally and marked provisional.

Why it scores here

This K9 Xyz and hand-trap midrange list opens reliably: a K9 monster is in the 5-card opening hand about 90% of the time, and it has several independent Xyz routes and a 3300-ATK closer. Its interaction is the main strength, with 11 hand traps and negation or removal text on 10 cards each, which is strongest going second (about 88% chance of a hand trap in the 6-card hand). The score is held back by reactive cards that need opponent action, four conditional Mulcharmy monsters that need an empty field, and an Extra Deck where Albion cannot be enabled by the main deck. No recorded combos exist, so ceiling and median are text-based inference, and no meta or win-rate data exists, so popularity and usage earned no points. The structural score uses the Midrange profile with D13 dropped and renormalised, and it is not an average of card scores.

Dimension scores

How the score was computed

Strategy profile: Midrange (D13 excluded and renormalised over 95 for a meta-neutral structural score). Structural ≈ 61, Going First ≈ 62, Going Second ≈ 69, Meta = provisional, Tournament Reliability ≈ 55. Modifiers: engine conflicts (-3); banlist exposure (-1); redundant interaction (2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional; structural = 5824/95 = 61.3)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.9 · 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

• Layered hand-trap suite: Ash Blossom x3, Infinite Impermanence x3, Droll & Lock Bird x2, Ghost Ogre x2, Maxx C x1, with about 88% chance of at least one going second (Verified counts; Inferred odds).
• Several independent K9 Xyz routes: K9-17 Ripper, K9-X Forced Release, K9-LC Release Restraint, K9-X Ripper/M, K9-66X Jacks (Verified text).
• High-ATK Extra Deck closers: K9-X Werewolf 3300, K9-X Ripper/M 3100 with piercing, Divine Arsenal AA-ZEUS 3000 (Verified stats).

Weaknesses

• Four Mulcharmy monsters (Fuwalos x3, Purulia x1) activate only with 'If you control no cards', which rarely holds in a board-based Xyz shell (Verified text; Inferred frequency).
• Albion the Branded Dragon (Extra) needs a Fallen of Albaz monster, and the main deck runs only the Fallen & The Virtuous spell, so the slot is near-dead (Verified text).
• 11 of 40 main cards are hand traps that need an opponent action to fire, so going-first hands can be partly dead (Inferred).
• Build deviates from the usage-table K9 shell: Vanquish Soul and Rock of the Vanquisher lines are absent, so the list is a custom hybrid, not the standard core (Observed).

Critical choke points

• K9 monsters' no-tribute Normal Summon needs the opponent to hold 2 or more cards; with 0-1 cards the starter costs a tribute (Verified text).
• Eleven reactive hand traps need the opponent to act before they do anything, so a hand with only hand traps on the first turn can stall (Inferred).

Recommended changes

Evidence & confidence

• Verified: Legal status, copy limits and banlist statuses (Maxx C and Crossout Designator Limited; Droll, Jokul and Fallen & The Virtuous Semi-Limited); Card text for Mulcharmy, K9 no-tribute summons, hand traps and Albion; Card stats (Werewolf 3300, Ripper/M 3100, ZEUS 3000); Main/extra/side counts and copy histogram
• Observed: Usage stats: K9 Ash, Izuna, Maxx C and Forced Release are at or near 100% inclusion; the deck deviates from the Vanquish Soul shell; Mulcharmy Fuwalos inclusion 63% across archetype decks
• Inferred: K9 monster present in opening 5 about 0.90 (hypergeometric proxy); Hand trap present going second about 0.88; Engine conflicts and near-dead Extra Deck slot; Interaction and resilience scores from text, not from recorded boards
• Provisional: Meta Power (null, no dated metagame sample); Matchup and format fit (D13 scored neutral, excluded from structural); Side-deck adaptability (no side deck in Master Duel)
• Data gaps: no recorded combos supplied; combo floor, median and ceiling are text-only inference no tournament link; archetype meta-share and per-pilot match record are absent no win-rate telemetry (going-first/second, matchup, brick or starter rates) Meta Power is Provisional without a dated metagame sample usage_statistics in_this_deck flags appear to ignore Extra Deck cards (for example Number 104 Masquerade and K9-X Werewolf are listed in the Extra zone but flagged in_this_deck=false), so core-coverage percentages are unreliable for the Extra Deck Master Duel has no side deck (side 0), so D12 has no post-side evidence deck title is null