K9 Deck #774321 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±10 · Confidence: Low)

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

Legality

Main 42 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Xyz and Link boards built around K9 and Vanquish Soul attackers (K9-X Werewolf, K9-00 Hound, Vanquish Soul Caesar Valius) reached through the K9 and Vanquish Soul searchers; Vanquish Soul Stake your Soul! and Snow Devil chip damage plus Mulcharmy draw pressure
• Turn 1 (going first): Open a Vanquish Soul or K9 searcher, add a second engine piece, then Normal or Special Summon into an Xyz; with no combo evidence this is text-derived and Inferred
• Turn 2 (going second): Hold Ash Blossom, Ghost Belle and Droll & Lock Bird as hand interaction, then use Retaliating C or Mulcharmy to punish the opponent's summons
• Recovery: Searchers (K9-17 Izuna, Vanquish Soul Dr. Mad Love, Vanquish Soul Razen) and the K9-X Forced Release recursion route rebuild the board after a single interruption
• After siding: Not available: the deck runs no Side Deck (Side Deck size 0), so there is no post-side plan

Why it scores here

The score is taken from the deck as a system, not from its cards: the archetype core (99% chance of at least one core card in a 5-card opening hand, Inferred) and the searcher density give it a reasonably reliable T1 engine. Interaction is real but scattered across hand traps, Ash Blossom, Ghost Belle and Droll & Lock Bird, plus several negation and removal texts in the Extra Deck. The deck is held back by its composition: only 22.8% of the Main Deck shares the exact K9 name and the rest is split across Vanquish Soul, Mulcharmy, Bystial, Greed, Kaiju and generic cards, so the engines conflict. Popularity did not earn points: the archetype usage stats confirm the list is real, but 13 of 25 core cards are missing and the list is Illegal. Combo ceiling and median are text-only inferences because no recorded boards were supplied, and there is no tournament or matchup data, so the result is a structural read with a provisional meta component.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 50, Going First ≈ 48, Going Second ≈ 46, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Banlist exposure (-6); Copy-limit violation (-3); Engine conflict (-3); Illegal-deck cap (0). Final formula: No reliable metagame, so Meta is Provisional: 0.80*Structural(50) + 0.20*TournamentReliability(40) = 48; modifiers total -12 gives 36; Illegal-deck cap applied (structural-only), final 25

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.99 · 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

• Archetype core is accessible: 99% chance of at least one core card in a 5-card opening hand
• Dense searcher text (18 cards) sustains card flow and recovery
• Layered interaction through hand traps and negation texts, plus Extra Deck removal
• Boss monsters at 3000 to 3300 ATK give real closing pressure

Weaknesses

• Illegal list: Forbidden and Limited copy-limit violations must be fixed before any normal rating
• Low exact-name purity (22.8%) splits the engine across several sub-archetypes
• No Side Deck, so there is no post-side adaptability
• No combo evidence, so the ceiling and median are text-only inferences

Critical choke points

• Starting engine depends on archetype searchers that must be drawn from a 42-card Main Deck
• Forbidden and Limited cards in the list make the deck unplayable as built

Recommended changes

Evidence & confidence

• Verified: Legality: Pot of Prosperity Forbidden (1 run), Stake your Soul! Limited (3 run, limit 1), Vanquish Soul Jiaolong Semi-Limited (3 run, limit 2); Main 42, Extra 15, Side 0 within master-duel size rules; Exact-name purity 22.8% across six sub-archetypes
• Observed: Usage stats confirm the archetype core is widely run (K9-17 Izuna and Ash Blossom at 100%)
• Inferred: Opening-hand consistency from hypergeometric estimates; Interaction and resilience from card-text reads; Brick rate and going-second reads
• Provisional: Meta Power and matchup fit: no dated metagame sample or tournament link
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry for YGOVN; going-first, going-second and matchup signals are Inferred or Unknown Meta Power is Provisional without a dated metagame sample Deck title is null, so the name is taken from the archetype