Atlantean Deck #771741 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 37/100 (±8 · Confidence: Low)

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

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Atlantean and Mermail Xyz/Synchro/Link boards (Poseidra, Abysstrite, Mermail Abyssgaios, Neo-Daedalus Rage) built from WATER monster search chains, with Atlantis-field support.; Mulcharmy draw pressure and hand-advantage grind when the opponent summons several monsters.
• Turn 1 (going first): Open a WATER searcher chain (Neptabyss, Mermail Abyssteus, Atlantean Dragoons, First Penguin) to reach a Level 7 or Xyz/Link extender, then add a backrow or hand-trap answer.
• Turn 2 (going second): Hold Ash Blossom, Dominus Impulse, Ghost Ogre and Nibiru as hand interaction, then use the search chain to rebuild a board once the opponent's first play is answered.
• Recovery: Mermail and Atlantean searchers and GY-based recursion (Mermail Abysspike, Atlantean Heavy Infantry, Warchief of Atlantis) refill hand after an interruption.
• After siding: Not evaluable: the deck runs no Side Deck, so there is no post-side plan.

Why it scores here

The deck reliably opens a searcher chain: with 19 searcher-text cards, the probability of at least one searcher in a 5-card opening hand is about 0.89 (Inferred), so the engine is usually switched on by turn 1 or 2. Conversion is plausible but unproven: there are no recorded boards, so the ceiling and median come from card text alone and the combo floor is unknown. Interaction is dense (15 removal-text cards, 8 negation-text cards, 8 hand traps), which supports going-second survival, but the list ships with no Side Deck and runs 3 copies each of two Semi-Limited cards, so it is illegal as built and cannot receive a normal contextual score. The score comes from consistency, interaction and closing power on the system, not from the archetype's popularity (usage stats only show the core list is real) and not from averaging the card scores. Ten of the 3-copy cards and the split between Atlantean, Mermail, Mulcharmy and Abyss sub-archetypes (17% exact-name purity) lower the efficiency and pilotability estimates.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 51, Going First ≈ 52, Going Second ≈ 48, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: illegal copy-limit violations (-10); no side deck (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional), then illegal-deck cap; theoretical/structural only: 0.80*51 + 0.20*40 = 48.8 -> 37 after modifiers

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.89 · 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

• Dense searcher chain (19 searcher-text cards) gives an engine that is usually live by turn 2 (Inferred, about 0.89 at least one in a 5-card hand)
• Layered interaction: 8 hand traps, Dominus Impulse, Lightning Storm and Harpie's Feather Duster support going-second play
• Strong board-scale closers (Poseidra, Poseidra Abyss, Neo-Daedalus Rage, Mediclius) with high ATK

Weaknesses

• Illegal as built: two Semi-Limited cards run 3 copies each against a limit of 2
• No Side Deck, so no post-side adaptation (D12 = 5)
• Low archetype purity (17.1%) with four sub-archetype engines that do not share a clear route
• Half of the core Extra Deck is missing (11 of 24 core cards absent), so the Extra build may not match the archetype's standard shell
• No recorded boards, so the combo floor and median cannot be checked

Critical choke points

• Legality: the deck cannot be played in its current form until the two over-limit copies are removed
• Searcher chain depends on WATER monsters in hand; a hand without a WATER starter stalls the engine
• Dominus Impulse and Ash Blossom are both Semi-Limited, so a legal list can run only 2 of each

Recommended changes

Evidence & confidence

• Verified: Legality: Illegal, 55 Main / 15 Extra / 0 Side; Ash Blossom & Joyous Spring and Dominus Impulse each run 3 copies against a Semi-Limited limit of 2; Atlantean exact-name purity is 17.1%; Poseidra 2800 ATK, Poseidra Abyss 3000 ATK, Neo-Daedalus Rage 2900 ATK; Usage stats: 13 of 24 core cards present (54.2%)
• Inferred: P(>=1 searcher in 5-card hand) ≈ 0.89; Interaction density from 15 removal-text and 8 negation-text cards; Going-second answers from hand traps (P >=1 hand trap in 6 cards ≈ 0.63); Combo ceiling and floor from card text only
• Provisional: Meta Power (no dated metagame sample); Matchup fit and tournament reliability (no tournament link)
• 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 starter/brick rates are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied No Side Deck supplied, so post-side plan cannot be evaluated Deck title is null