Deep Sea Deck #769494 — Yu-Gi-Oh! OCG
40 Main, 15 Extra, incl. Atlantean Dragoons x3, Mermail Abyssteus x3, Mermail Shadow Squad x3. Created Oct 20, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/20/2026
Main Deck (40)
- Abyssrhine, the Atlantean Spirit x2
- Atlantean Dragoons x3
- Atlantean Heavy Infantry x1
- Eria the Water Channeler x1
- Guitar Gurnards Duonigis x1
- Mermail Abysspike x2
- Mermail Abyssteus x3
- Mermail Shadow Squad x3
- Moulinglacia the Elemental Lord x1
- Neptabyss, the Atlantean Prince x3
- Poseidra, the Storming Atlantean x3
- Superancient Deepsea King Coelacanth x1
- Deep Sea Diva x1
- Gluttonous Reptolphin Greethys x1
- Icejade Ran Aegirine x1
- Abyss-sting Triaina x1
- Deep Sea Aria x2
- Forbidden Droplet x2
- Harpie's Feather Duster x1
- Lightning Storm x2
- One for One x1
- Raigeki x1
- Infinite Impermanence x2
- Virtue Stream x1
Extra Deck (15)
- Marincess Coral Anemone x1
- Mermail Abyssalacia x1
- Mermail King - Neptabyss x1
- Adamancipator Risen - Dragite x1
- Icejade Gymir Aegirine x1
- Swordsoul Supreme Sovereign - Chengying x1
- White Aura Monoceros x1
- White Aura Whale x1
- Deep Sea Prima Donna x1
- Abysstrite, the Atlantean Spirit x1
- LeVirtue Dragon x1
- Mermail Abyssgaios x1
- Number 4: Stealth Kragen x1
- Poseidra Abyss, the Atlantean Dragon Lord x1
- Snowdust Giant x1
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63± 6/ 100
Power Score
Structural
66
Reliability
60
Going First
67
Going Second
68
Deck — Deck Power Evaluation
Final Contextual Deck Power: 63/100 (±6 · Confidence: Medium)
| Overall score | Value |
|---|---|
| Structural Deck Power | 66 |
| Going First | 67 |
| Going Second | 68 |
| Meta Power | provisional |
| Tournament Reliability | 60 |
- Primary strategy: Midrange
- Secondary strategies: Toolbox, Tempo
- Format: ocg
Legality
Main 40 / Extra 15 / Side 0 — status: Legal.
Identity & game plan
- Win condition: Searcher-driven Water beatdown: search Neptabyss, Abyssteus, Dragoons or Poseidra, then extend into 2800-3000 ATK Synchro, Xyz and Link boss monsters.; Direct attacks from Atlantean Dragoons and recursion-based pressure from GY Water monsters.
- Turn 1 (going first): Open a searcher (Neptabyss, Abyssteus, Abysspike, Aria), search the next engine piece, and build a Synchro or Xyz boss from Water monsters on T1-T2.
- Turn 2 (going second): Use Raigeki, Lightning Storm, Forbidden Droplet, Harpie's Feather Duster or Impermanence to clear the board, then rebuild with searchers and recursion.
- Recovery: Recover from the GY with Abysspike, Gluttonous Reptolphin Greethys, Deep Sea Diva and Duonigis; search again with Aria and Abyssrhine.
- After siding: No side deck is run, so there is no post-side plan; the list cannot adapt between games.
Why it scores here
The deck reliably opens a searcher line: 16 searcher-text cards give about 0.94 probability of at least one in a 5-card opening hand (Inferred, hypergeometric). Its 15 Extra Deck monsters span six Synchro, six Xyz and three Link summons, so the deck can convert a Water board into several different 2800-3000 ATK bosses. Interaction is broad, including Raigeki, Harpie's Feather Duster, Lightning Storm, Forbidden Droplet, two Impermanence and Coelacanth negation, which gives it good end-board control against both boards and new boss monsters. The score does not come from Deep Sea being a popular archetype, which the usage data only confirms is a real list, and it is not an average of the card scores. No combos or tournament record were supplied, so combo conversion and matchup fit are text-based inference and the meta is provisional.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 72 | P(at least 1 searcher in a 5-card hand) ≈ 0.94; 16 searcher-text cards, 3-copy starters ≈ 0.34 (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 62 | 13 single-copy cards and 13 Spell/Trap slots, several conditional (Lightning Storm, Harpie's Duster, Triaina, One for One) (Inferred) |
| D3 | Combo Conversion & Ceiling | 66 | No recorded combos; text-only read of searcher and summon chains into 2800-3000 ATK bosses (Inferred) |
| D4 | Combo Floor & Median Output | 58 | No recorded boards to measure median output; searcher density suggests a dependable floor (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 66 | Several independent GY routes (Abysspike, Greethys, Diva, Duonigis, Dragoons) allow recovery after one interruption (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 70 | Recursion and draw from Abyssrhine, Aria and GY-sent Water effects keep resources regenerating (Inferred) |
| D7 | End-Board & Interaction Quality | 74 | Raigeki, Harpie's Duster, Lightning Storm, Droplet, two Impermanence, Coelacanth and Heavy Infantry give layered interaction (Verified card text + Inferred density) |
| D8 | Going-Second & Board-Breaking Power | 70 | Four clean board-wipe or removal spells plus Droplet and Impermanence against a going-second board (Verified text + Inferred) |
| D9 | Offensive Pressure & Closing Power | 80 | Poseidra, Coelacanth, Chengying, Icejade Gymir and Poseidra Abyss give 2800-3000 ATK closers (Verified stats + Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 60 | 40 main cards with 13 singles, but archetype purity is 0% exact-name and spread across 15 sub-archetypes (Verified composition + Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 58 | 15 distinct Extra Deck cards with 6/6/3 synchro/xyz/link split; flexible but several are off-engine (Verified composition + Inferred) |
| D12 | Side Deck Adaptability | 30 | Zero side deck cards, so no post-side adaptability (Verified) |
| D13 | Matchup Coverage & Format Fit | 50 | No tournament link or dated meta sample; matchup fit is provisional (Provisional) |
| D14 | Pilotability & Error Tolerance | 62 | Multiple conditional and chain-dependent effects raise the decision load, but the core searcher lines are straightforward (Inferred) |
How the score was computed
Strategy profile: Midrange primary, Toolbox secondary; D13 dropped for meta-neutral structural score and weights renormalised to 95. Structural ≈ 66, Going First ≈ 67, Going Second ≈ 68, Meta = provisional, Tournament Reliability ≈ 60. Modifiers: engine conflicts (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.94 · 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
- 16 searcher-text cards give a high chance of a searcher in opening hand
- Layered interaction with Raigeki, Harpie's Duster, Lightning Storm, Droplet and Impermanence
- 15 distinct Extra Deck monsters across Synchro, Xyz and Link routes
- Strong 2800-3000 ATK closers
Weaknesses
- No side deck, so no post-side plan
- Low exact-archetype purity; many sub-archetypes compete for slots
- Several conditional spells (Lightning Storm, Duster, One for One) can be dead
Critical choke points
- Water monster presence: most searchers and recursion require WATER monsters in hand or GY
- Single-copy Extra Deck bosses mean losing a specific boss to interaction removes that route
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | One for One | A second copy of a core searcher (Abysspike or Abyssrhine) | One for One is a conditional Limited card that needs a monster in hand; a searcher gives more consistency for the same slot |
| 2 | Virtue Stream | A side deck of at least 10-15 cards | A side deck is currently empty; any dedicated side slot adds post-side adaptability |
Evidence & confidence
- Verified: Legal status, 40 main / 15 extra / 0 side, Limited status of Harpie's Duster and One for One; Card text and stats for the main and extra listed cards; Searcher-text group of 16 cards and archetype purity 0% exact-name
- Inferred: Opening-hand searcher probability 0.94 (hypergeometric); Consistency, brick and recovery reads from card text; Interaction density and going-second read from card text; Midrange primary strategy and Toolbox secondary read
- Provisional: Meta power (no dated metagame sample); Matchup and format fit (D13 at 50)
- Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN — going-first/second, matchup and brick rates are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied
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