Umbral Horror Deck #767723 — Yu-Gi-Oh! OCG
56 Main, 15 Extra, incl. Alligator's Dragon Knight x3, K9-17 Izuna x3, Mulcharmy Fuwalos x3. Created Oct 20, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/20/2026
Main Deck (56)
- Alligator's Dragon Knight x3
- Droll & Lock Bird x1
- Fisherman of Legend x1
- Jinzo - Energy Shocker x1
- K9-17 Izuna x3
- K9-66a Jokul x1
- K9-66b Lantern x1
- K9-ØØ Lupis x1
- Mulcharmy Fuwalos x3
- Mulcharmy Purulia x3
- Nibiru, the Primal Being x3
- Speedroid Taketomborg x1
- Speedroid Terrortop x3
- Swiftwind Panther Warrior x3
- Ash Blossom & Joyous Spring x3
- "A Case for K9" x1
- Book of Eclipse x2
- Dark Time Wizard x3
- Forbidden Droplet x3
- Graceful & Skull Dice x2
- Harpie's Feather Duster x1
- K9-X Forced Release x1
- Lightning Storm x2
- Sleepy Scapegoats x1
- Evenly Matched x3
- Foolish Graverobber x1
- Infinite Impermanence x3
- Reversal Box x1
- Solemn Judgment x1
Extra Deck (15)
- Red-Eyes Black Dragon Exceed x1
- I:P Masquerena x1
- Mediclius the Extraordinary Power Patron x1
- Rahamu, Envoy of the Sacred Tome x1
- S:P Little Knight x1
- CXyz Hope Chaos Barian Dragon x1
- CXyz N.As.Ch. Knight x1
- Divine Arsenal AA-ZEUS - Sky Thunder x1
- K9-17 "Ripper" x1
- K9-66X "Jacks" x1
- K9-X "Werewolf" x1
- M-X-Saber Invoker x1
- N.As.H. Knight x1
- Number 104: Masquerade x1
- Number C104: Umbral Horror Masquerade x1
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 35/100 (±10 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 51 |
| Going First | 48 |
| Going Second | 56 |
| Meta Power | provisional |
| Tournament Reliability | 45 |
- Primary strategy: Midrange
- Secondary strategies: Stun, Toolbox
- Format: ocg
Legality
Main 56 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).
Identity & game plan
- Win condition: Board pressure from K9 and Umbral Horror Xyz/Link/Fusion boss monsters (K9-X Werewolf 3300 ATK, Red-Eyes Black Dragon Exceed 3400 ATK, Divine Arsenal AA-ZEUS 3000 ATK); no recorded lines confirm any of them reliably.; Number C104 / Masquerade Xyz boards backed by Dark Time Wizard recursion and Mulcharmy draw, all read from card text only.
- Turn 1 (going first): Open on a starter (Dark Time Wizard, Mulcharmy Fuwalos, Speedroid Terrortop, Alligator's Dragon Knight) and spend the turn building a Xyz/Link board, holding Ash Blossom and Infinite Impermanence for the opponent's response.
- Turn 2 (going second): Use the 13 hand traps (Ash Blossom, Infinite Impermanence, Evenly Matched, Nibiru, Droll & Lock Bird) to answer the opponent's first summon or search, then convert the resulting tempo into a Xyz or Link summon.
- Recovery: Recover through Mulcharmy draws, Dark Time Wizard and Foolish Graverobber recursion, and Speedroid searches; the Extra Deck holds 15 cards for rebuilds.
- After siding: No Side Deck is registered (Side Deck size 0), so there is no post-side plan; the list cannot adapt between games.
Why it scores here
This list is Illegal in OCG: Ash Blossom & Joyous Spring and K9-17 Izuna are each run three times against a Semi-Limited limit of two, so the score is a structural estimate capped at 35 and is not a normal Final Contextual score. Structural reads come from the card text and hypergeometric draws: the archetype core has about a 0.64 chance of at least one card in a 5-card opening hand, and the 13 hand traps give good interaction, scoring well on end-board interaction (D7) and going-second pressure (D8). The deck does not earn points for Umbral Horror popularity or average card quality: only 1.4% of its cards carry the exact archetype name, and it has no recorded combos, no Side Deck, and no meta data, so median output, side adaptability, and matchup fit stay low or provisional. The weighting uses the Midrange profile; the 0.80/0.20 blend and modifiers are applied and then capped for illegality.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 55 | P(at least one archetype-core card in 5-card opening hand) ≈ 0.64; 4 starters at 3 copies each; searcher text in 12 cards (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 45 | Hand-trap-heavy list (13 hand traps) with conditional starters; proxy no-core-card hand ≈ 0.36 (Inferred) |
| D3 | Combo Conversion & Ceiling | 45 | No recorded combos; Umbral Horror and Number C104 boards are read from card text only, with core Umbral Horror monsters absent (Inferred) |
| D4 | Combo Floor & Median Output | 40 | No combo data and no observed boards, so floor/median is unknown and scored conservatively (Provisional) |
| D5 | Interruption Resilience & Route Redundancy | 55 | 13 hand traps and recursion from Mulcharmy, Dark Time Wizard and Speedroid, but single-route Xyz lines remain (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 50 | Mulcharmy draws and Dark Time Wizard recursion offset spend; no resource telemetry (Inferred) |
| D7 | End-Board & Interaction Quality | 70 | 18 removal-text cards plus Lightning Storm, Harpie's Feather Duster, Solemn Judgment, and Jinzo give layered interaction (Verified card text / Inferred quality) |
| D8 | Going-Second & Board-Breaking Power | 60 | Going-second hand traps are strong (P ≥1 hand trap in 6 cards ≈ 0.81) but no going-second board data exists (Inferred) |
| D9 | Offensive Pressure & Closing Power | 65 | Boss monsters at 3000 to 3400 ATK (Red-Eyes Exceed, K9-X Werewolf, AA-ZEUS) give closing power on paper (Verified stat / Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 45 | 56 Main cards across 29 distinct names; 70 of 75 non-exact archetype copies and 20 tech cards dilute coherence (Verified count / Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 55 | 15 Extra Deck cards (10 Xyz, 4 Link, 1 Fusion) with overlapping Number C104 and Masquerade lines (Inferred) |
| D12 | Side Deck Adaptability | 10 | Side Deck is empty (Side Deck size 0), so there is no post-side adaptation (Verified) |
| D13 | Matchup Coverage & Format Fit | 50 | Archetype share and tournament record are unavailable (Provisional) |
| D14 | Pilotability & Error Tolerance | 40 | Many conditional, sequence-dependent lines and hand-trap timing decisions (Inferred) |
How the score was computed
Strategy profile: Primary Midrange (approx. 85%) with Stun interaction weighting (approx. 15%); structural score reported on the Midrange profile. Structural ≈ 51, Going First ≈ 48, Going Second ≈ 56, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist exposure (-8); no Side Deck (-4). Final formula: Illegal list: 0.80*Structural(51) + 0.20*TournamentReliability(45) = 49.8; ContextModifiers -12 gives 37.8; capped to 35 for an Illegal list (theoretical/structural-only). Meta Power provisional.
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