Atlantean Deck #526131 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Control
• Format: tcg

Legality

Main 58 / Extra 14 / Side 0 — status: Illegal. 8 violation(s).

Identity & game plan

• Win condition: Atlantean and Mermail monsters recurse through WATER-monster GY costs into Poseidra-line and Extra Deck boss monsters that attack through a hand-trap-protected board.; Direct-attack pressure from Atlantean Dragoons and Sea Serpent beaters once the opponent's interaction is spent.
• Turn 1 (going first): Open on an Atlantean or Mermail starter, use the WATER-GY recursion loop to set up one Extra Deck boss, and hold Ash Blossom or Droll for the opponent's first answer. Going first is weaker because the hand-trap density is only partly useful on the opponent's turn.
• Turn 2 (going second): Hold 2 to 3 hand traps (Ash Blossom, Dominus Impulse, Infinite Impermanence, Droll and Lock Bird, Artifact Lancea, Nibiru) to blank the opponent's first Special Summon or search chain, then rebuild through Neptabyss and Mermail Abyssteus recursion.
• Recovery: Recover from a disrupted board through Mermail Shadow Squad and Atlantean Dragoons GY effects, plus Mulcharmy draw effects when the hand is empty.
• After siding: Not evaluable: the deck runs no Side Deck, so there is no post-side plan. Best-of-3 play would require building one.

Why it scores here

The deck reliably opens an Atlantean or Mermail starter: the archetype core has about a 97% chance of at least one card in a 5-card opening hand (hypergeometric, Inferred), and the searchers and recursion effects keep the engine running after a single interruption. Its interaction density is high, with 14 hand traps and 13 negation-text cards, which makes the going-second hand strong on paper. Conversion, however, is only partly evidenced: there are no recorded boards, so the combo ceiling and median are text-only inference. The score is pulled down by the legality problem: 8 cards break the copy or banlist rules, including five Forbidden cards, so the deck is capped as a theoretical structural read. 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 primary, Control secondary (Midrange weights used; Control not blended into the numbers). Structural ≈ 55, Going First ≈ 55, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist_exposure (-5); engine_conflicts_low_purity (-2); no_side_deck (-2). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers = 0.80*55 + 0.20*50 - 9 = 45; Illegal-deck cap applied to 30 (theoretical/structural only). Meta provisional.

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.97 · 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

• Archetype core is almost always reachable in the opening hand (Inferred)
• High hand-trap and negation density gives strong going-second interaction (Inferred)
• Recursion through WATER GY costs keeps resources flowing after disruption (Inferred)
• Extra Deck has Xyz, Synchro and Link boss options, with 2800 to 3000 ATK threats (Verified stats)

Weaknesses

• Illegal list: copy limits broken on three cards and five Forbidden cards present (Verified)
• Weak archetype purity (18%), so the engine is conflicted across sub-archetypes (Verified composition)
• No Side Deck (Verified)
• No combo evidence, so conversion and median output rest on text inference (Inferred)

Critical choke points

• Forbidden Crossout Designator, Called by the Grave and Triple Tactics Talent are removed in any legal build, so their interaction slots must be rebuilt
• WATER-monster GY count is the Moulinglacia and Abysstrite enabler; losing the GY loop removes the boss line (Inferred)

Recommended changes

Evidence & confidence

• Verified: Illegal status: 8 violations and 5 Forbidden cards in the main/extra deck; Main 58, Extra 14, Side 0 against the TCG size rules; Exact archetype purity 18.1%; Atlantean and Mermail core cards present with copy counts
• Inferred: Starter access about 0.97 from the hypergeometric estimate; Going-second hand-trap coverage about 0.83; Recursion-based resource regeneration from card text; Board-breaking and closing power from stats and text
• Provisional: Meta power (null); Matchup and format fit (D13 = 50)
• 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 exists in YGOVN for this deck No dated metagame sample, so Meta Power stays provisional Deck has no Side Deck, so post-side adaptability cannot be measured