Deep Sea Deck #772303 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±6 · Confidence: Low)

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

Legality

Main 40 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Extra Deck boss monsters (Poseidra Abyss, Moulinglacia, Levia-Dragon, Azure Ocean Dragon Lord) built through Atlantean and Atlantis recursion and searches; the illegal Forbidden cards are not counted in this read.; Field-spell Atlantis engine (Umi) that turns Level-reduction and Special Summon loops into board presence.
• Turn 1 (going first): Open a Neptabyss or Mulcharmy Purulia hand, search an Atlantean or Atlantis card, and use Advent of Atlantis or Atlantis to set up a Link or Xyz boss by turn two (Inferred; no combos recorded).
• Turn 2 (going second): Hold Ash Blossom, Infinite Impermanence, Maxx C and Dominus Impulse to protect the first summon, then rebuild through the Atlantean recursion chain (Inferred; hand-trap density gives roughly 65 percent of six-card hands at least one hand trap).
• Recovery: Recover from GY via Neptabyss, Mermail Shadow Squad, Warchief and Levia-Dragon search and special-summon effects, then re-enter the Extra Deck boss (Inferred).
• After siding: No side deck is run, so there is no post-side plan; the deck is not legal to play as built.

Why it scores here

The deck is Illegal as built: it runs one Barrier Statue of the Torrent and two Bahamut Shark, both Forbidden in OCG, so it receives a structural-only read and its final score is capped at 35. Structurally it has a reasonably accessible engine: the Atlantean and Atlantis searchers (14 searcher-text cards, about 90 percent to hit at least one in a five-card hand) and the Neptabyss and Dragoons 3-copy lines give a consistent T1 and T2 opening, though the exact-name archetype purity is only 1.8 percent and the core is spread across several sub-archetypes. Interaction is the deck's strongest structural feature, with 6 hand traps, 10 negation and 8 removal texts, and roughly 65 percent of going-second six-card hands contain at least one hand trap. There is no recorded combo data, no side deck and no tournament or meta evidence, so the combo ceiling, median output and matchup fit are text-only inference and carry low confidence. Popularity and archetype usage did not earn points, and no card scores were averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 53, Going First ≈ 50, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist exposure (-12); no Side Deck (0); illegal_cap (-5). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) = 0.80*53 + 0.20*50 = 52.4; modifiers total -12 gives 40; Illegal cap applied to 35 (theoretical/structural-only)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.9 · 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

• Strong searcher density (14 searcher texts) gives about a 90 percent chance of a search in a 5-card opening hand (Inferred)
• Layered interaction: 6 hand traps, 10 negation texts and 8 removal texts (Inferred from text)
• Extra Deck bosses with 2600 to 2800 ATK at Level or Rank 7 to 8 give a viable closing threat (Verified stats)

Weaknesses

• Illegal as built: 2 Bahamut Shark and 1 Barrier Statue of the Torrent are Forbidden in OCG
• No side deck, so no post-side plan and no answer to a changing meta
• Core spread over several sub-archetypes; exact-name purity is only 1.8 percent
• No recorded combo or win-rate data to confirm floor or median output

Critical choke points

• The 1 Barrier Statue of the Torrent and 2 Bahamut Shark slots must be removed before this list can be played legally
• Atlantis Field Spell and Level-reduction interplay is a single point of failure for the Atlantis-branch lines (Inferred)

Recommended changes

Evidence & confidence

• Verified: Deck is Illegal: Barrier Statue of the Torrent and Bahamut Shark are Forbidden in OCG; Main 40, Extra 15, Side 0 and within OCG size rules; Maxx C (1 copy), Ash Blossom (2) and Dominus Impulse (2) are within their Limited or Semi-Limited caps; Card stats and counts from evidence
• Inferred: Opening-hand consistency estimates from hypergeometric draws; Hand-trap coverage for going-second hands; Going-first and going-second plans from card text
• Provisional: Meta Power is null and matchup fit is provisional without a 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 match record absent No win-rate telemetry; matchup and brick rates are Inferred No side deck registered Deck title is null