K9 Deck #773925 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 62/100 (±8 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: Level 5 K9 Normal/Special Summons feed Xyz and Link threats (K9-X Werewolf 3300 ATK multi-attack, Divine Arsenal AA-ZEUS 3000 ATK, Super Starslayer TY-PHON 2900 ATK) for end-board pressure; Vanquish Soul hand-revealed monsters (Caesar Valius 3000 ATK, Heavy Borger 2500 ATK, Druiswurm 2500 ATK) and Dogoran 3000 ATK as follow-up beaters
• Turn 1 (going first): Normal Summon K9-17 Izuna without Tribute (opponent holds 6 cards at your T1), search with A Case for K9 or Forced Release into a Level 5 Xyz, and keep the hand-trap count for the next turn
• Turn 2 (going second): Hold Ash Blossom, Ghost Ogre and Maxx C for the opponent's first activation (about 71% at least one hand trap in 6 cards), then rebuild with Level 5 K9 Normal Summons and Xyz into Ripper or Masquerade
• Recovery: K9-17 Ripper detaches material to search a K9 card; Vanquish Soul Hollie Sue and Razen re-supply hand monsters; Jokul and Lantern re-summon from hand or GY
• After siding: Not defined: the list runs 0 side-deck cards, so there is no post-side plan to evaluate; D12 is scored low for this reason

Why it scores here

The score comes from the system: the K9 core is present in 25 of 25 listed core cards and about 98.7% of opening 5-card hands contain at least one archetype starter, with Izuna and Jokul able to Normal Summon without Tribute while the opponent holds 2 or more cards. Interaction is layered across three hand traps (Ash Blossom, Ghost Ogre, Maxx C), two Masquerade negation effects, Forced Release and Jacks, which keeps the end-board and going-second plans credible. Closing power is high because the Extra Deck carries several 2900 to 3300 ATK threats, but no combo recordings exist, so ceiling and median output are text-based inferences and carry wide uncertainty. Side-deck adaptability is weak (0 side cards) and there is no dated meta sample, so Meta Power stays provisional and was excluded from Structural. Popularity (K9 usage at 100% inclusion for the core) and archetype naming confirmed the list is real but did not add points, and card scores were not averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Midrange (D13 dropped and renormalised to 95, meta-neutral). Structural ≈ 67, Going First ≈ 72, Going Second ≈ 65, Meta = provisional, Tournament Reliability ≈ 58. Modifiers: banlist exposure (-2); engine conflicts (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional; Structural = 6332/95 = 66.65)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.99 · key two-card combo ≈ — · full-brick estimate ≈ 0.01 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Archetype core is fully present (25 of 25 by card list) and about 98.7% of opening hands hit at least one starter
• Three hand traps plus two Masquerade negations and Forced Release give layered interaction
• Extra Deck closing threats at 2900 to 3300 ATK

Weaknesses

• No side deck, so no post-side plan and weak Side Adaptability
• No recorded combos or tournament data; ceiling and median are inferred from text
• Two sibling sub-archetypes with exact-name purity 30.9%; off-archetype singletons (Dogoran, Magnamhut, Maxx C) dilute the engine

Critical choke points

• K9 Izuna, Jokul and Noroi Normal Summons require the opponent to hold 2 or more cards in hand
• Vanquish Soul hand reveals need the right Attribute monsters in hand (Start, Stake, Snow Devil)
• Single-copy Maxx C and Magnamhut are Limited cards; losing one leaves a gap in the interaction or summon package

Recommended changes

Evidence & confidence

• Verified: Legal at master-duel: 40 main, 15 extra, 0 side; all restricted cards within legal copy limits; Core card list: 25 of 25 K9 core cards present in the card array (correcting usage flags); Extra Deck breakdown: 12 Xyz and 3 Link, consistent with card array
• Observed: K9-66a Jokul, Izuna, Forced Release, Ash, Maxx C and Lupis show 100% usage inclusion in archetype stats
• Inferred: At least one starter in opening 5 ≈ 0.987 (archetype core proxy); Hand trap present in 6 going second ≈ 0.71; Layered interaction and closing power reads from card text; Going-first 72 and going-second 65 composite scores
• Provisional: Meta Power (null) and D13 matchup fit (50) pending a dated meta sample; Archetype meta-share not available
• Data gaps: usage statistics in this deck flags are false for every Extra Deck card, but the card array lists all of them as present (e.g. Number 104: Masquerade, K9-66X Jacks, Divine Arsenal ZEUS); core-card presence 52 is therefore understated and the corrected value is 25 of 25 No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot records absent No win-rate telemetry: going-first and going-second and matchup results are inferred or unknown Meta Power is Provisional unless a dated metagame sample is supplied No guides attached for the K9 or Vanquish Soul archetypes