Atlantis, City of the Sea Dragon Deck #770522 — Yu-Gi-Oh! TCG

56 Main, 15 Extra, incl. First Penguin x3, Marincess Blue Tang x3, Mulcharmy Fuwalos x3. Created Oct 21, 2026 by YGO Mod.

Deck Atlantis, City of the Sea Dragon TCG

Created by: YGO Mod (20517634)

Created On: 10/21/2026

 
 


Official AI Deck Power Analysis
MidrangeConfidence: LowEvaluated Oct 22, 2026
35± 8/ 100
Power Score
Structural 52
Reliability 48
Going First 50
Going Second 55

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±8 · Confidence: Low)

Overall score Value
Structural Deck Power 52
Going First 50
Going Second 55
Meta Power provisional
Tournament Reliability 48
  • Primary strategy: Midrange
  • Secondary strategies: Stun, Toolbox
  • Format: tcg

Legality

Main 56 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

  • Win condition: Umi / Atlantis Link-and-Synchro board built from Link Summons (Levia-Dragoon, Azure Ocean Dragon Lord, Marincess Great Bubble Reef) that converts into large ATK attackers (Mediclius 3000, Adamancipator Risen 3000).; Mulcharmy and Marincess draw and recursion engines that grind card advantage over a long game.
  • Turn 1 (going first): Open a searcher or Atlantis starter (Advent of Atlantis, Call of Atlantis, Cynet Mining, Marincess Sea Angel), reach the Umi field, and protect with the 7 hand traps and negate-based Spells/Traps.
  • Turn 2 (going second): Use Ash Blossom, Infinite Impermanence, Droll & Lock Bird, Solemn Accusation and Dominus Impulse to break the opponent's starter, then rebuild through Mulcharmy draw effects. Going second is the stronger seat on paper given 57% hand-trap coverage in a six-card hand.
  • Recovery: Recycle from GY through Warchief of Atlantis, Marincess Coral Anemone and Monster Arms of Atlantis, and rebuild Link monsters from the Extra Deck.
  • After siding: No Side Deck is registered, so there is no post-side plan. Best-of-3 play is not supported by this list.

Why it scores here

The deck would reliably open a searcher or Atlantis starter, with P(at least one searcher in a 5-card hand) ≈ 0.80 (Inferred). Its interaction package is dense, with about 20 negation texts, 14 removal texts and 7 hand traps, which gives it real resilience against an opponent's starter (Inferred). Its ceiling depends on Umi Link routes into 2600–3000 ATK attackers, but no recorded boards exist, so the ceiling and median are text-based estimates only. The score does not come from Atlantis being a popular archetype (no usage stats or tournament data exist), and it does not average card scores. It is capped low because the list is Illegal: three copies each of Ash Blossom and Dominus Impulse exceed the Semi-Limited limit of two, so the figure is theoretical and structural only.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 58 P(≥1 searcher text in 5 cards) ≈ 0.80; P(≥1 copy of a 3-of starter in 5 cards) ≈ 0.25; engine requires a Link route, so access is moderate (Inferred)
D2 Opening-Hand Quality & Brick Management 52 14 distinct cards at 3 copies plus several 0-level Spells and many Link-only pieces raise brick and conflicting-hand risk; 7 hand traps help partly (Inferred)
D3 Combo Conversion & Ceiling 60 No combos supplied; text supports an Umi Link route into 2600–3000 ATK monsters, which sets the ceiling (Inferred)
D4 Combo Floor & Median Output 42 No recorded boards; the Link-dependent engine with many non-engine hand traps suggests a median well below the ceiling (Inferred)
D5 Interruption Resilience & Route Redundancy 60 7 hand traps plus Trap negates and two recursion routes give multiple independent lines after an interruption (Inferred)
D6 Resource Economy, Recovery & Grind 55 Mulcharmy draw-on-summon effects and Marincess recursion sustain card advantage in long games (Inferred)
D7 End-Board & Interaction Quality 62 About 20 negation texts and 14 removal texts with layered Trap/Spell interaction give strong end-board interaction (Inferred)
D8 Going-Second & Board-Breaking Power 58 Going second (six-card hand) gives P(≥1 hand trap) ≈ 0.57, which supports a strong counter-board when going second (Inferred)
D9 Offensive Pressure & Closing Power 60 Link attackers at 2600–3000 ATK and Adamancipator Risen at 3000 ATK provide closing power once the Umi board is live (verified card text, Inferred conversion)
D10 Main Deck Efficiency & Flexibility 40 Only 14% exact archetype purity; 61 off-archetype copies spread across Mulcharmy, Marincess, Daedalus, Dominus and Solemn reduce coherence (observed composition)
D11 Extra Deck Efficiency & Coverage 55 12 Link, 2 Synchro and 1 XYZ in the Extra Deck; most slots are used, but the Extra mix spreads across several sub-archetypes (observed composition)
D12 Side Deck Adaptability 5 No Side Deck present, so no post-side adaptation is possible (verified, zero side count)
D13 Matchup Coverage & Format Fit 40 No tournament or meta-share data; matchup fit is Provisional until a dated metagame sample is supplied (provisional)
D14 Pilotability & Error Tolerance 35 Multiple engines (Atlantis/Umi, Mulcharmy, Marincess, Daedalus) with sequencing across Link, Synchro and GY effects make the deck hard to pilot (Inferred)

How the score was computed

Strategy profile: Balanced (default; no single strategy profile applied because the primary read is Midrange with a Stun secondary and no recorded combos). Structural ≈ 52, Going First ≈ 50, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 48. Modifiers: banlist_exposure (-8); no_side_deck (-2); no_combo_evidence (-2). Final formula: No reliable metagame: 0.80*Structural(52) + 0.20*TournamentReliability(48) = 51.2; modifiers -12 → 39; Illegal cap applied → 35 (theoretical/structural-only)

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.8 · 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 negation and hand-trap package (7 hand traps, about 20 negation texts) gives strong interruption coverage
  • Searcher density (about 15 texts, P ≈ 0.80 in a 5-card hand) supports reliable access to starters
  • Multiple Link-and-Synchro attackers reach 2600–3000 ATK, which gives real closing power

Weaknesses

  • Illegal copy counts: 3 copies each of two Semi-Limited cards
  • Low archetype purity (14%) with about 61 off-archetype copies across five sub-archetypes
  • No Side Deck, so no post-side adaptation
  • Multi-engine sequencing is complex and error-prone

Critical choke points

  • The Umi field (Atlantis, Advent, or Call) is needed for most Link routes, so losing it removes most of the engine
  • Extra Deck Link monsters need exact material routes; a single disrupted Link Summon can strand the board
Priority Remove Add Reason
1 1 copy of Ash Blossom & Joyous Spring any non-restricted hand trap or searcher already in the Main Deck, or a Side-able replacement Brings the list to the Semi-Limited copy limit of 2 and makes the deck legal
2 1 copy of Dominus Impulse a non-restricted card of the same role Brings the list to the Semi-Limited copy limit of 2 and makes the deck legal
3 off-archetype support cards (Mulcharmy or Solemn copies) more Atlantis or Umi-mentioning monsters and Spells Raises archetype purity and engine coherence
4 none a Side Deck of 10–15 cards Adds post-side adaptability, which the list currently lacks entirely

Evidence & confidence

  • Verified: Legality: 3 copies each of Ash Blossom & Joyous Spring and Dominus Impulse exceed the Semi-Limited limit of 2 (Illegal); Main Deck 56 cards and Extra Deck 15 cards are within the TCG size rules; Side Deck is 0; Card text for the hand-trap, negation and searcher roles (regex-scaffold hints checked against excerpts); Archetype purity 14.1% and Extra Deck composition (12 Link, 2 Synchro, 1 XYZ)
  • Observed: Composition counts: 26 distinct Main Deck cards, copy histogram 1×10 / 2×2 / 3×14
  • Inferred: Searcher hypergeometric estimate P(≥1 in 5) ≈ 0.80; Hand-trap P(≥1 in going-second 6) ≈ 0.57; Going-second stronger than going-first on the interaction package; Umi Link routes as the primary win condition
  • Provisional: Meta Power and D13 matchup fit, with no dated metagame sample; Tournament reliability, with no per-pilot or win-rate data
  • Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No archetype usage statistics: core and meta-standard comparison unavailable No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry: going-first, going-second, matchup and brick rates are Inferred or Unknown Meta Power is Provisional without a dated metagame sample No Side Deck data

More TCG Info

Atlantis, City of the Sea Dragon

Atlantis, City of the Sea Dragon Breakdown

 
 

 

 

 

 

 

 
 

 

 
https://metaduelist.com/
Top