Deep Sea Deck #775299 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±10 · Confidence: Low)

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

Legality

Main 60 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Atlantean and Mermail board pressure converted by Poseidra, Abysstrite and Icejade-class Extra Deck boss monsters (Inferred from card text; no recorded boards); Direct attacks from Atlantean Dragoons and Level 3 or lower Sea Serpents; Daedalus Link beats
• Turn 1 (going first): Open a Neptabyss, Mermail Shadow Squad or Mulcharmy starter, search Atlantean or Mermail support, and build toward a Synchro or Xyz boss while holding hand traps (Inferred)
• Turn 2 (going second): Hold Ash Blossom, Ghost Ogre, Infinite Impermanence and Droll to disrupt the opponent's first board, then rebuild through Mulcharmy draw and Mermail searches (Inferred)
• Recovery: Mermail Abyssteus, Abysspike and Warchief of Atlantis re-search and revive from the GY; Pot of Sloth refills the hand (Inferred)
• After siding: No Side Deck is registered, so there is no post-side plan (Gap)

Why it scores here

Scored on the deck as a system, not an average of card scores. Its Atlantean, Mermail and Mulcharmy starters and about 20 searcher-text cards give a reasonable chance of a live engine on turn 1 (about 72 percent for the 13-copy core group in a 5-card hand, Inferred). Hand traps (Ash Blossom, Infinite Impermanence, Ghost Ogre, Droll) and negation text provide interaction on both turns. The deck is fragmented: only 3 of 75 copies are exact-name archetype cards (4 percent purity), so engine coherence rests on several sub-archetypes sharing search and summon rules, and the recorded combo evidence is empty, so floor and ceiling are text-only inference. The deck is Illegal (Ash Blossom and Dominus Impulse at 3 copies against a 2-copy OCG limit) and has no Side Deck, so the final score is capped at 30 and reported as theoretical/structural only. Archetype popularity was not credited, and the Extra Deck bosses were scored only from their text.

Dimension scores

How the score was computed

Strategy profile: 0.8 Midrange + 0.2 Toolbox (Inferred from hand-trap and tech density). Structural ≈ 52, Going First ≈ 50, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Banlist exposure (-8); Engine fragmentation (-4). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability + modifiers gives about 38 (49.6 - 12 = 37.6). Illegal cap applied: score set to 30, labelled theoretical/structural-only.

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.72 · 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

• Large searcher density (20 searcher-text cards) gives a high chance of a live engine
• Hand traps and negation text cover both going-first and going-second interaction
• Extra Deck has high-ATK bosses (Poseidra Abyss, Dragite, Icejade, Neo-Daedalus) and multiple Extra Deck routes

Weaknesses

• Illegal: two Semi-Limited cards run 3 copies in an OCG deck
• Very low exact-name purity (4 percent): engine coherence depends on several sub-archetypes
• No Side Deck, so no post-side adaptability
• No combos or guides, so conversion, floor and ceiling are unmeasured

Critical choke points

• Core starters are Neptabyss, Mermail Shadow Squad and Mulcharmy; a hand without them leaves the Extra Deck bosses dead
• Over-limit Ash Blossom and Dominus Impulse must be cut to legal copies before the list can be played

Recommended changes

Evidence & confidence

• Verified: Main count 60, Extra 15, Side 0; Ash Blossom and Dominus Impulse at 3 copies against a legal limit of 2 (OCG Semi-Limited); Archetype purity 4 percent exact-name; 72 off-archetype copies; Card text and stats for all listed cards
• Inferred: Starter access and brick risk from the hypergeometric estimates; Going-first and going-second plans from card text; Interaction quality from negation and removal text; Dimension scores D1 to D11 and D14
• Provisional: Meta power (null); Matchup and format fit (D13); Side Deck adaptability (D12) is provisional because no Side Deck exists
• 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 are absent No win-rate telemetry for going-first, going-second, matchups or brick rates No Side Deck registered for this list Meta Power stays provisional unless a dated metagame sample is supplied