Ogdoadic/Abhyss Deck #769117 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±8 · Confidence: Low)

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

Legality

Main 40 / Extra 14 / Side 0 — status: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Ritual-summon Mitsurugi / Ogdoadic Reptile boss monsters (Ame no Murakumo, Futsu no Mitama, Ogdoabyss, Nephilabyss, Derk) and attack through a weakened board; Link and Xyz boards (Ragnaraika Chain Coils, Ryzeal Detonator, The Zombie Vampire) that carry the Reptile boss pressure
• Turn 1 (going first): Open on a Mitsurugi/Ogdoadic searcher (Saji, Aramasa, Kusanagi, Nauya), search a Ritual Spell, and set up a Ritual or Link Summon of a Reptile boss on turn 2
• Turn 2 (going second): Use hand-based negation and Reptile GY recursion (Mitsurugi Great Purification, Derk, Nephilabyss) to answer the opponent's first board before a Ritual boss lands
• Recovery: Recur Reptile monsters from the GY through Ogdoadic Water Lily, Nauya and Nephilabyss, then rebuild a Ritual or Link board from the recovered Reptiles
• After siding: No Side Deck is registered (side_count 0), so there is no post-side plan; the deck cannot adapt between games

Why it scores here

The deck is Illegal: three copies of the Forbidden Ame no Habakiri no Mitsurugi and one copy of the Forbidden King of the Feral Imps are in the list, so it receives a capped, structural-only score of 25 and is not given a normal Final Contextual score. Structurally, the Mitsurugi/Ogdoadic core is dense (24 core copies, P(at least one core card in a 5-card opening hand) about 0.99 from the hypergeometric estimate, Inferred), so the engine is usually live on turn 1 and Ritual and Link conversion is well supported by searchers. Interaction is present but thin (6 negation-text and 7 removal-text cards, no hand traps), and there is no side deck, so the deck cannot adapt to the opponent. There are no recorded boards, no tournament data and no guides, so the combo ceiling and floor are text-only inferences. Popularity and archetype usage stats confirm the core exists, but they did not earn points, and no card scores were averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Midrange primary, Toolbox secondary (D13 dropped for Structural re-normalisation not needed; Meta provisional). Structural ≈ 52, Going First ≈ 55, Going Second ≈ 45, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist_exposure (-12); no_side_deck (-2). Final formula: Unclamped 0.80*Structural(52) + 0.20*TournamentReliability(45) = about 51; capped to 25 because the deck is Illegal (Forbidden copies), so this is a theoretical/structural-only score (Meta provisional)

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

• Core archetype density (24 core copies) makes the engine live on turn 1 in almost every opening hand
• Many searchers (20 searcher-text cards) support consistent access to Ritual and Link pieces
• Strong Reptile boss monsters (Ame no Murakumo 3200 ATK, Ogdoabyss 3100 ATK) give a clear closing route
• Graveyard recursion (Derk, Nephilabyss, Ogdoadic Water Lily) gives a restart route after interruption

Weaknesses

• Illegal list: 3x Ame no Habakiri no Mitsurugi and 1x King of the Feral Imps are Forbidden in OCG
• No hand traps and no floodgates; the going-second interaction is weak
• No side deck (side_count 0) so there is no adaptation between games
• Sub-archetype mix (Mitsurugi, Ogdoadic, Ryzeal, Apophis, Cyber) reduces engine coherence
• Ritual costs and Tributes add decision points and error risk

Critical choke points

• Mitsurugi Ritual and Mitsurugi Mirror (Ritual Spell access) are needed to summon the boss monsters
• Going second depends on the opponent not having an early board breaker, since the deck has no hand traps

Recommended changes

Evidence & confidence

• Verified: Main 40 and Extra 14 sizes are within OCG size rules (main 40-60, extra 0-15); Ame no Habakiri no Mitsurugi (3 copies) and King of the Feral Imps (1 copy) are Forbidden with legal copies 0; Limited cards (Ryzeal set, Mitsurugi Prayers, S:P Little Knight, Pre-Preparation of Rites) run 1 copy each, which is legal; Core-card inclusion stats from usage_statistics (archetype core 16 of 25 present)
• Inferred: Engine accessibility P(>=1 starter in 5) about 0.99; Brick and dead-hand risk from mixed sub-archetypes; Interaction breadth from negation and removal text; Going-first and going-second estimates
• Provisional: Meta Power (no dated metagame sample); Matchup and format fit (D13)
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record are absent No win-rate telemetry: going-first, going-second, matchup, brick and starter rates are inferred only Meta Power is provisional unless a dated metagame sample is supplied No side deck registered (side_count 0), so post-side adaptability cannot be measured