Atlantean Deck #772042 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 20/100 (±10 · Confidence: Low)

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

Legality

Main 41 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Atlantis / Umi field engine feeding Poseidra Abyss, Poseidra and Levia-Dragon boss monsters and Link/Xyz follow-ups; Neo-Daedalus Rage and Levia-Dragoon Link pressure off the Atlantean and Daedalus searchers
• Turn 1 (going first): Open a WATER starter (First Penguin, Neptabyss, Fish Sonar, Mulcharmy Purulia, Warchief of Atlantis) and search an Atlantis/Umi Spell or Trap to set up the Field Zone engine (Inferred from card text, no recorded boards)
• Turn 2 (going second): Hand traps (Ash Blossom, Droll & Lock Bird, Maxx C, Dominus Impulse) to break the opponent's first board, then rebuild through Warchief and Neptabyss recursion (Inferred)
• Recovery: Neptabyss and Warchief return to hand or re-summon from GY; Abyssrhine and Atlantean Dragoons add Sea Serpent or Aqua monsters back from GY (Inferred)
• After siding: No Side Deck is registered, so there is no post-side plan; sideboarding is unavailable as built (verified from legality counts)

Why it scores here

The deck is scored as a connected system, not an average of its card scores. Its consistency comes from five 3-copy WATER starters plus about 20 searcher-text cards, which gives a roughly 0.33 chance of a starter in a 5-card opening hand and a near-complete archetype-core presence (Inferred from the hypergeometric table). Interaction is layered: 4 hand traps, Dominus Impulse, Daedalus Maelstrom and several negation or removal texts, which is the deck's strongest dimension (Inferred). Conversion is plausible through the Atlantis field engine into Poseidra and Poseidra Abyss, but no recorded boards exist, so the ceiling and median are text-only inference and carry low confidence. Popularity did not earn points: the archetype core is only partly present (13 of 24 usage-core cards) and exact-name purity is 14.3%, so 48 of 56 copies sit in sub-archetypes such as Penguin, Mulcharmy and Abyss-. The deck is illegal as built because it runs 2 copies of Forbidden Bahamut Shark, so the normal contextual score is capped and the structural read is theoretical only.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 57, Going First ≈ 55, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist exposure (-8); no Side Deck (-4). Final formula: Illegal deck: theoretical structural read only. Structural 57 (Combo profile) → 0.80*57 + 0.20*50 = 55.6 before modifiers; modifiers total -12 → ~44, then capped to 20 for Illegal status

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.33 · key two-card combo ≈ — · full-brick estimate ≈ 0.02 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Layered interaction: 4 hand traps, Dominus Impulse and Daedalus Maelstrom
• Strong searcher density (about 20 searcher-text cards) for opening-hand consistency
• High-ATK boss monsters (Poseidra Abyss 3000, Neo-Daedalus Rage 2900, Poseidra 2800)

Weaknesses

• Illegal as built: 2 copies of Forbidden Bahamut Shark
• Low archetype purity (14.3%) with many off-archetype sub-archetypes
• No side deck

Critical choke points

• Atlantis, City of the Sea Dragon field spell (1 copy) is the single engine enabler
• Bahamut Shark must be removed before the list is playable at all

Recommended changes

Evidence & confidence

• Verified: Legality: 2 copies of Bahamut Shark (Forbidden), so the deck is Illegal; Main 41 / Extra 15 / Side 0 within OCG size rules; Archetype purity 14.3%, with 48 of 56 copies off-archetype
• Inferred: Starter access ~0.33 per 5-card hand and searcher density ~97%; Interaction layering from hand-trap and negation text flags; Going-second hand-trap plan and recursion routes
• Provisional: Meta and matchup fit (no tournament or meta sample); Median output and floor (no recorded combos)
• 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, game-level, brick/starter/OTK rates) — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied no Side Deck supplied (Side Deck size 0)