Bystial/Byssted Deck #770633 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Toolbox
• Format: tcg

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Vanquish Soul / K9 Xyz and Link boards (Caesar Valius, K9-X Werewolf, Number C104, Zeus) built through Vanquish Soul revealed-attribute summons and K9 Normal Summons; Piercing and direct pressure from K9-X Ripper/M and Divine Arsenal AA-ZEUS after a board is cleared by Raigeki or Lightning Storm
• Turn 1 (going first): Normal Summon or Special Summon a Vanquish Soul or K9 starter, use searchers (Vanquish Soul, Start!, A Case for K9, K9-66a Jokul) to find the next engine piece, and hold Ash Blossom or Droll & Lock Bird for the opponent's turn
• Turn 2 (going second): Hold the six-card hand for hand traps (Ash Blossom, Ghost Belle, Droll & Lock Bird, Retaliating C) and then rebuild through Mulcharmy draw effects and Vanquish Soul Heavy Borger
• Recovery: Mulcharmy Fuwalos and Purulia draw when the hand is emptied, Vanquish Soul monsters return to hand to re-summon, and Stake your Soul! reuses a monster in the End Phase
• After siding: Not evaluable: the deck has no Side Deck, so no post-side plan exists in the list

Why it scores here

The list cannot be played as built: three cards exceed their TCG copy limits (Ash Blossom and K9-17 Izuna at 3 copies where 2 are legal, Vanquish Soul Razen at 3 where 1 is legal), so the score is a structural-only read capped at 30. The engine is dense on paper: 20 searcher-text cards give a 0.91 chance of at least one searcher in an opening five (Inferred), and the three-copy Vanquish Soul and K9 starters are reachable, though the core-group probability is only 0.32. Interaction is broad (Solemn Judgment, Ash Blossom, Droll & Lock Bird, Ghost Belle, Raigeki, Lightning Storm, Harpie's Feather Duster, Umbral Horror Masquerade), and the Extra Deck supplies several 3000+ ATK boards. Median and ceiling are not measured because no combo boards or tournament records exist, and the deck spreads across Vanquish Soul, K9, Mulcharmy, Bystial, and Xyz support with 0% exact-archetype purity, which lowers coherence. The score does not come from Bystial being a recognised archetype, and no card scores were averaged.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 54, Going First ≈ 55, Going Second ≈ 52, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist_exposure (-10); no_side_deck (-2). Final formula: Illegal list: structural-only. Uncapped 0.80*54 + 0.20*45 + modifiers (-12) = 40, capped at 30 for an Illegal deck (rubric §Step 2)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.25 · 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

• Dense searcher count (20) gives reliable access to engine pieces
• Broad layered negation (Solemn Judgment, Ash Blossom, Droll & Lock Bird, Ghost Belle, Calamity Caesar)
• High-ATK Extra Deck closers (Caesar Valius, Number C104, Arc Rebellion Xyz Dragon, Zeus, K9-X Werewolf)

Weaknesses

• Illegal list: three cards over copy limits
• Three archetype families with 0% exact-archetype purity
• No Side Deck
• No combo, tournament, or guide evidence

Critical choke points

• Vanquish Soul Razen at 3 copies where only 1 is legal
• Dependence on Vanquish Soul revealed-attribute summons for Extra Deck access

Recommended changes

Evidence & confidence

• Verified: Three cards exceed their copy limits (BanList export); Main 55, Extra 15, Side 0 (size rules 40-60 / 0-15 / 0-15); Card text and stats from the resolved card list
• Observed: No combo boards recorded (combos_evidence total 0)
• Inferred: Starter access 0.25 per three-copy card in a 5-card hand (hypergeometric); Searcher access 0.91 and hand-trap access 0.58 (hypergeometric); Interaction layering from card text
• Provisional: Meta Power (no dated metagame sample); Matchup fit (no 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; going-first and going-second splits are Inferred Meta Power is Provisional No Side Deck in list