Atlantean Deck #771582 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 58/100 (±8 · Confidence: Medium)

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

Legality

Main 55 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Xyz and Synchro boards led by Poseidra Abyss (3000), Poseidra, Levia-Dragon and Mermail Abyssgaios, enabled by the Atlantis/Umi search chain; Atlantean Dragoons direct attacks from Level 3 or lower Sea Serpent monsters
• Turn 1 (going first): Search and place via Advent of Atlantis, Neptabyss, Warchief or Siren Vortex to make Umi and the Atlantis field live, then extend into Level 4 and Level 7 Xyz
• Turn 2 (going second): Answer the opposing board with Raigeki, Twin Twisters, Virtue Stream, Ice Barrier or Black Horn, then rebuild the engine through Umi-conditional effects
• Recovery: Recur from the Graveyard through Atlantean Heavy Infantry, Mermail Shadow Squad and Atlantean Dragoons effects, and re-search with Neptabyss or Dragoons
• After siding: None: the deck has an empty side deck, so there is no post-side plan

Why it scores here

The deck reliably opens its engine through a large searcher base (27 searcher-text copies give about a 97 percent chance of at least one in an opening five) and a core group with about an 89 percent chance of at least one piece in hand. Its real strength is closing: the Extra Deck supplies several 2600 to 3000 ATK Xyz and Synchro bosses, and layered negation and removal (Raigeki x2, Black Horn, Ice Barrier, Daedalus Maelstrom, Virtue Stream) gives it end-board interaction. The score is held back by the absence of recorded boards, so the combo ceiling and median are text-based inferences, by zero hand traps and an empty side deck, and by a 14.3 percent exact-archetype purity spread across Atlantis, Umi, Abyss and Mermail. Archetype popularity in the usage statistics did not earn points, and card scores were not averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 63, Going First ≈ 64, Going Second ≈ 56, Meta = provisional, Tournament Reliability ≈ 55. Modifiers: Empty side deck (-2); Engine split across sub-archetypes (-1); No hand traps (0); Banlist exposure (0). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) + ContextModifiers = 0.80*63 + 0.20*55 - 3 = 58.4, rounded to 58

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.89 · key two-card combo ≈ — · full-brick estimate ≈ 0.11 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Searcher density (27 copies) makes the engine reachable on most openers
• Layered negation and removal across traps and spells
• High-ATK Xyz and Synchro closing options from the Extra Deck
• Multiple independent lines and Graveyard recursion

Weaknesses

• No recorded boards, so combo conversion is unmeasured
• No hand traps and weak going-second answers beyond Raigeki
• Empty side deck gives no post-side adaptation
• Engine spread across related sub-archetypes

Critical choke points

• Umi and Atlantis field presence gates most Umi-conditional effects
• Level 7 materials for Poseidra Abyss depend on few main-deck monsters
• Dependence on the Atlantis field spell (1 copy) for several conditional effects

Recommended changes

Evidence & confidence

• Verified: Legal OCG size: 55 main and 15 extra, within size rules; No copy-limit or banlist violations; Copy histogram 12/8/9 sums to 55 main cards; Extra Deck breakdown: 13 Xyz, 2 Synchro
• Observed: No observed boards in the evidence
• Inferred: Starter access 0.97 (searcher) and 0.89 (core group) from hypergeometric draws; Going-second interaction profile from card text; Engine pilotability from conditional effects
• Provisional: Median and floor output (no boards); Matchup and format fit (no tournament link); Meta Power (no dated 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 usage statistics in this deck flags conflict with the card list: Abysstrite, Poseidra Abyss, LeVirtue Dragon, Mermail Abyssgaios and Toadally Awesome are present as Extra cards but marked not in deck, so core coverage (55 percent) is likely understated and was not relied on no win-rate telemetry (going-first, going-second, matchup, brick or OTK rates) Meta Power provisional without a dated metagame sample deck title is null