Umbral Horror Deck #769008 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 40/100 (±10 · Confidence: Low)

• Primary strategy: Combo
• Secondary strategies: Toolbox
• Format: ocg

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Xyz Summon high-ATK Number / Masquerade monsters (Number C104 variants, Number 104: Masquerade, Number 69: Heraldry Crest - Dark Matter Demolition) off Umbral Horror and Barian's searches; Barian's Seventh Untopia and Masquerade chain to a 2-4 Xyz board that the hand-trap stack protects
• Turn 1 (going first): Turn 1 search (V Umbral Horror, Gorgonic Umbral Horror or Barian's Hope) into a Level 4 Xyz base, then Masquerade V or a Number C104 through Barian's Seventh Untopia
• Turn 2 (going second): Use the six-card hand to hold Ash Blossom, Ghost Belle, Ghost Ogre, Infinite Impermanence or Droll to stop the opponent's first summon or search, then rebuild through Thousand Umbral Horror
• Recovery: Gorgonic and Thousand Umbral Horror recover monsters from the hand or GY, and Mulcharmy Fuwalos or Purulia redraws cards once the board is empty
• After siding: Not evaluable: side_count is 0, so there is no post-side plan

Why it scores here

The structural read is built on the deck as a system. The archetype core is consistent: P(at least one archetype-core card in a 5-card opening hand) is about 0.89, and P(at least one searcher) is about 0.81 (Inferred). The 15 hand-trap and tech cards supply redundant interaction for both going-first and going-second turns, which lifts interaction and going-second scores. The Xyz ceiling is credible from card text (Masquerade and C104 variants at 2700-3100 ATK), but no recorded boards exist, so the floor and median are Provisional and held near neutral. Popularity (archetype core inclusion around 80%) confirms the list is real and accessible but was not counted as power. Average card scores were not used. The deck is Illegal (Seventh Tachyon and Ash Blossom over copy limits, no side deck), so the score is capped and the evaluation is theoretical and structural only.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 64, Going First ≈ 66, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist_exposure (-12); illegal_cap (-9); no_side_deck (0). Final formula: 0.80*Structural(64) + 0.20*TournamentReliability(50) = 61; modifiers -12 (banlist exposure) = 49; Illegal cap applied to 40 (theoretical/structural-only). Meta Power provisional.

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.89 · 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 hand-trap and negation stack covering both turn orders
• Archetype core and searchers give high starter access (Inferred)
• Xyz ceiling from Masquerade and C104 variants with removal text

Weaknesses

• Illegal list: Seventh Tachyon at 3 (limit 1) and Ash Blossom at 3 (limit 2)
• No side deck, so no post-side adaptability
• Complex Number and Masquerade chains lower pilotability

Critical choke points

• Masquerade Xyz base in the Extra Deck (multiple Masquerade and C104 monsters depend on it)
• Ash Blossom and the hand-trap stack for going-second answers

Recommended changes

Evidence & confidence

• Verified: Legality: Seventh Tachyon and Ash Blossom over OCG copy limits; Main 55, Extra 15, Side 0 (within size rules); Archetype core inclusion around 80% per usage stats
• Inferred: Opening-hand consistency (P(>=1 core) 0.89, P(>=1 searcher) 0.81); Interaction density from card text; Going-second and removal strength from card text; Xyz ceiling from card text
• Provisional: Median and floor (no recorded boards); Meta and matchup fit (no dated meta sample)
• 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 OCG Meta Power is Provisional unless a dated metagame sample is supplied