K9 Deck #750738 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 59/100 (±7 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: Xyz Summon high-ATK boss monsters (K9-X Werewolf, Arc Rebellion Xyz Dragon, Divine Arsenal AA-ZEUS) from K9 and Kashtira starters and convert the board with multi-attacks and recursion; Kashtira Shangri-Ira recursion loop and Number/Umbral Horror Xyz negation boards
• Turn 1 (going first): Open with a Normal Summon of K9-04 Noroi or K9-66b Lantern without tribute (requires opponent with 2 or more hand cards), search a K9 card with A Case for K9 or Lantern, and set up a Level 5 Xyz with Ripper
• Turn 2 (going second): Hold Ash Blossom and Infinite Impermanence for the opponent's first starter or search effect, then rebuild through Kashtira Fenrir or Kashtira Unicorn searches and a Kashtira Shangri-Ira Xyz
• Recovery: Recur Kashtira monsters from banish or GY with Kashtira Birth and Kashtiratheosis, and reuse K9 Xyz materials through K9-X Forced Release and K9-66X Jacks
• After siding: Not applicable: Master Duel is single-match with no side deck; the deck runs 0 side cards

Why it scores here

The deck is scored as a system: its Midrange engine opens reliably because the K9 and Kashtira starters are dense (the archetype-core group has about a 0.74 chance of at least one copy in a 5-card opening hand, and searcher text has about a 0.94 chance), and it converts that into boards through K9 and Kashtira Xyz boss monsters with up to 3300 ATK plus recursion. Interaction is broad for a non-combo deck (6 hand traps, 17 removal-text cards, Raigeki, Heavy Storm, Feather Duster, and K9-X Forced Release), so the end board is resilient, while brick risk and 3-engine conflict (Level 5 K9 Xyz versus Level 7 Kashtira Xyz) hold back consistency. No recorded boards exist, so the combo ceiling and median are text-inferred and carry low weight. Popularity and archetype share earned no points, and card scores were not averaged.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 64.3, Going First ≈ 66, Going Second ≈ 63, Meta = provisional, Tournament Reliability ≈ 62. Modifiers: banlist exposure (-2); engine compactness (-2); engine conflicts (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional); 0.80*64.3 + 0.20*62 = 63.9, then modifiers -5 = 58.9, rounded to 59

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.74 · key two-card combo ≈ — · full-brick estimate ≈ 0.26 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Dense starter access: archetype core and searcher text are both highly likely in opening hands
• Broad interaction package with six hand traps, mass removal and negation text
• Recursion through Kashtira Birth, Kashtiratheosis and K9 Xyz material loops adds resilience
• High-ATK Xyz boss monsters close games once a board is established

Weaknesses

• Three engines (K9, Kashtira, generic tech) dilute consistency and create conflicting summon rules
• Only 34.5 percent exact-name archetype purity
• Four Limited cards and one Semi-Limited card create banlist exposure
• No recorded boards; the combo ceiling and median are inferred from text only

Critical choke points

• Tearlaments Kashtira (Limited, single copy) as a Kashtira starter that is hard to replace
• Dependence on at least one Level 5 monster for K9 Xyz lines and on a Level 7 Kashtira for Shangri-Ira

Recommended changes

Evidence & confidence

• Verified: Legal in Master Duel: 40 Main, 15 Extra, 0 Side; four Limited cards at 1 copy; Kashtira Unicorn Semi-Limited at 2 copies; Copy histogram 3x7, 2x6, 1x7; 20 distinct Main cards, 14 distinct Extra cards; Archetype spread K9 19, generic 18, Kashtira 14 (exact purity 34.5 percent)
• Observed: Usage statistics show archetype-standard core cards such as Ash Blossom and K9-17 Izuna at 100 percent inclusion (archetype stats only)
• Inferred: Opening-hand starter probability from hypergeometric draw table; Hand-trap access at 0.65 on going second; Ceiling and median ratings from text, with no recorded boards; Interaction quality from negation and removal text; Going-first and going-second power splits
• Provisional: Meta Power (null, no dated metagame sample); Matchup fit and tournament reliability (no tournament link); Side-deck adaptability (not applicable in Master Duel)
• 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 are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied usage_statistics in_this_deck flags contradict the card list for Extra Deck cards (K9-17 Ripper, K9-66X Jacks, K9-X Werewolf run 1-2 copies but are flagged in_this_deck false), so core-presence counts are understated Master Duel has no side deck; post-side scoring is not applicable