Atlantean Deck #771915 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

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

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Atlantean and Umi board pressure: Poseidra, Warchief, Atlantean Dragoons direct attacks, and Link/Xyz beaters from the Extra Deck; Mulcharmy card-advantage draws that outlast a stalled board, with Levia-Dragon of Atlantis - Daedalus as a sweeper that wipes both fields
• Turn 1 (going first): Open Neptabyss or Mulcharmy, search an Atlantean or Mermail via Neptabyss, Mermail Abysspike or Fish Sonar, then build a Link or Xyz board while holding Ash Blossom or Ghost Belle for the first interaction
• Turn 2 (going second): Hold 13 hand traps (Ash Blossom, Ghost Belle, Ghost Ogre, Infinite Impermanence, Droll and Lock Bird, Maxx C, Nibiru) to answer the first summon, then recover through Mulcharmy draws when the opponent's board is cleared
• Recovery: Mulcharmy draws on each opponent summon, Neptabyss and Mermail searchers, and Advent of Atlantis or Call of Atlantis to rebuild a Field or Link line after a clear
• After siding: No Side Deck is registered (0 cards), so no post-side plan can be evaluated; the deck cannot adapt between games

Why it scores here

The deck opens reliably: the archetype-core group has a 0.93 chance of at least one copy in a 5-card opening hand (Inferred hypergeometric estimate), and Neptabyss and Mulcharmy give it several ways to convert a starter into card advantage. Its strongest rating comes from the interaction layer, with 13 hand traps and about 13 negation-text cards, which answer the first summon when going second (about 0.82 chance of at least one hand trap in a 6-card going-second hand, Inferred). It loses points on consistency and brick management: only 14.3 percent of its cards are the exact Atlantean name, and 60 of 70 archetype-family copies sit in sub-archetypes such as Atlantis, Mulcharmy, Daedalus, Abyss-, and Umi that do not all cooperate. There are no recorded combo boards, so the ceiling and median are text-only inferences and are scored with low weight. The deck also has zero Side Deck cards, which holds D12 down. Popularity and archetype stats did not earn points; the score comes from the system as a whole, not from averaging card scores. Because the list runs two Forbidden cards, the deck is Illegal and the score is capped at 30 as a theoretical, structural-only read.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 58, Going First ≈ 66, Going Second ≈ 66, Meta = provisional, Tournament Reliability ≈ 52. Modifiers: banlist exposure (-4); engine conflict (-2). Final formula: Uncapped: 0.80*58 + 0.20*52 + modifiers(-6) = 51. Illegal cap applied (two Forbidden cards) -> 30, theoretical/structural-only. Meta Power provisional (null).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.93 · 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 interaction: 13 hand traps and 13 negation-text cards, with a strong going-second answer count
• Card-advantage engines: Mulcharmy draws plus Neptabyss and Mermail searchers
• Extra Deck coverage across Link and Xyz routes with several 2600+ ATK closers

Weaknesses

• Illegal in OCG: Triple Tactics Talent and Bahamut Shark are Forbidden
• Low archetype purity (14.3 percent exact name) with several sub-archetypes that do not fully cooperate
• No Side Deck, so no post-side adaptation
• Seven Tuner-type monsters with no Synchro Extra Deck support, which suggests dead or mis-typed slots

Critical choke points

• Neptabyss and Mulcharmy are the main starters; a single hand-trap or board-clear answer can stall both engines
• Levia-Dragon of Atlantis - Daedalus and Atlantis Field depend on an Umi or Atlantis monster being on the field

Recommended changes

Evidence & confidence

• Verified: Main 55, Extra 15, Side 0 counts (OCG size rules 40-60 / 0-15 / 0-15 satisfied); Triple Tactics Talent and Bahamut Shark are Forbidden in OCG, 1 copy each, making the deck Illegal; Card text and stats for all 55 Main and 15 Extra cards as supplied in evidence
• Observed: Archetype usage stats: 14 of 24 core cards present (58.3 percent in the usage table)
• Inferred: Starter access 0.93 via archetype-core proxy; single-card hypergeometric odds; Going-second hand-trap coverage about 0.82; Brick risk from Mulcharmy conditions and dead hand traps; Ceiling and interaction quality from card text
• Provisional: Meta Power (null), matchup fit (D13 = 50 placeholder), and tournament reliability (52)
• Data gaps: No combos supplied, so combo ceiling, median, and per-starter output are text-only inferences No tournament link, so archetype meta-share and per-pilot match records are absent No win-rate telemetry (going-first/second, matchup, brick, or starter rates) Meta Power is provisional without a dated metagame sample Usage-stat in this deck flags contradict the card list for several Extra Deck cards (Abysstrite, Marincess Coral Anemone, Poseidra Abyss, Mermail Abyssgaios, Toadally Awesome, Mermail King - Neptabyss all appear in the Extra list but are flagged in this deck false), so the 58.3 percent core coverage is unreliable No Side Deck, so post-side adaptability is unmeasured