Atlantis, City of the Sea Dragon Deck #774132 — Yu-Gi-Oh! TCG
52 Main, 20 Extra, incl. Marincess Blue Tang x3, Marincess Sea Horse x3, Marincess Sleepy Maiden x3. Created Oct 25, 2026 by YGO Mod.
Deck Atlantis, City of the Sea Dragon TCG
Created by: YGO Mod (20517634)
Created On: 10/25/2026
Main Deck (52)
- Coralianectes, the Luminous Cradle Dragon x1
- Electric Jellyfish x1
- Levia-Dragon of Atlantis - Daedalus x1
- Marincess Blue Tang x3
- Marincess Sea Horse x3
- Marincess Sleepy Maiden x3
- Marincess Springirl x3
- Monster Arms of Atlantis x1
- Mulcharmy Fuwalos x3
- Mulcharmy Purulia x3
- Nibiru, the Primal Being x3
- Siren Vortex of Atlantis x3
- Speedroid Taketomborg x1
- Speedroid Terrortop x3
- Trickstar Aqua Angel x1
- Warchief of Atlantis x2
- Ash Blossom & Joyous Spring x2
- Advent of Atlantis x2
- Call of Atlantis x2
- Cynet Mining x3
- Marincess Battle Ocean x3
- Marincess Dive x3
- Marincess Bubble Ring x1
- Marincess Wave x1
Extra Deck (20)
- Azure Ocean Dragon Lord - Neo-Daedalus Rage x1
- Levia-Dragoon - Daedalus x1
- Marincess Aqua Argonaut x1
- Marincess Blue Slug x1
- Marincess Coral Anemone x1
- Marincess Coral Triangle x1
- Marincess Crystal Heart x1
- Marincess Great Bubble Reef x1
- Marincess Marbled Rock x1
- Marincess Sea Angel x2
- Marincess Wonder Heart x1
- Full Armored Crystalzero Lancer x1
- Gaia Stream, the Graceful Force x1
- LeVirtue Dragon x1
- N.As.H. Knight x1
- Number 101: Silent Honor ARK x1
- Number 103: Ragnazero x1
- Number 4: Stealth Kragen x1
- Stealth Kragen Spawn x1
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 52.7 |
| Going First | 55 |
| Going Second | 48 |
| Meta Power | provisional |
| Tournament Reliability | 45 |
- Primary strategy: Combo
- Secondary strategies: Midrange
- Format: tcg
Legality
Main 52 / Extra 20 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).
Identity & game plan
- Win condition: Link-based board: Marincess Link Monsters and Atlantis/Umi Link and Xyz boss monsters (e.g. Levia-Dragoon - Daedalus, Azure Ocean Dragon Lord - Neo-Daedalus Rage) converting a WATER engine into a large attacker; Xyz boss monsters (Number 101, Number 103, Stealth Kragen Spawn) that remove or destroy opposing monsters
- Turn 1 (going first): Summon a starter (Marincess Springirl, Marincess Sea Horse, Marincess Blue Tang or Mulcharmy Purulia), use a searcher (Cynet Mining, Speedroid Terrortop, Warchief of Atlantis) and build toward a Link Summon; the Extra Deck overflow means the line depends on which 15 Extra cards are actually drawn
- Turn 2 (going second): Hold Ash Blossom and Nibiru or Marincess Wave to disrupt the opponent's first summon line, then rebuild through Marincess Dive and Call of Atlantis; untested against real boards
- Recovery: Recur Marincess monsters from the GY through Marincess Blue Slug, Marincess Dive and Marincess Sleepy Maiden, and rebuild links from the GY
- After siding: Not applicable: the deck has no Side Deck, so there is no post-side plan
Why it scores here
This deck is Illegal: its Extra Deck holds 20 cards against a TCG maximum of 15, so it is capped to a structural-only score of 30 and does not receive a normal contextual score. Its strongest structural feature is engine access: 31 Marincess-family copies give a near-certain archetype-core opening (P(>=1) ~0.99), and three 3-copy Marincess starters each sit at about 0.27 per 5-card opening hand, backed by 16 searcher-text cards (P(>=1) ~0.85). Interaction is layered across Ash Blossom x2, Marincess Wave, Marincess Bubble Ring, Nibiru and removal-text monsters, which earns a reasonable end-board score. Floor and median output are unverified because no boards were supplied, so the score does not rest on the ceiling. Popularity and archetype usage did not earn points, and card scores were not averaged; the deck is only 13.9% exact-archetype by name, with 62 off-archetype copies (Mulcharmy, Roid, Daedalus, Stealth Kragen, generic) that weaken engine coherence. The lack of a Side Deck removes all post-side adaptability.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 65 | P(>=1 starter in 5-card hand) ~0.27 per 3-copy starter; archetype-core P(>=1) ~0.99; searcher P(>=1) ~0.85 (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 55 | 52 Main cards with 62 off-archetype copies raises brick and conflict risk; mixed Normal-Summon starters (Inferred) |
| D3 | Combo Conversion & Ceiling | 55 | Ceiling read from Link and Xyz text (Marincess Aqua Argonaut, Wonder Heart, Neo-Daedalus Rage), no recorded boards (Inferred) |
| D4 | Combo Floor & Median Output | 40 | No combos_evidence supplied, so floor and median are unmeasured and scored conservatively (Provisional) |
| D5 | Interruption Resilience & Route Redundancy | 55 | Five hand traps plus Ash Blossom x2 and Marincess Wave give two-to-three independent disruption answers (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 60 | 16 searcher-text cards and GY recursion (Marincess Dive, Blue Slug, Sleepy Maiden) support rebuilding (Inferred) |
| D7 | End-Board & Interaction Quality | 62 | 8 negation-text and 13 removal-text cards across hand traps and boss monsters (Inferred, semantic from card text) |
| D8 | Going-Second & Board-Breaking Power | 50 | Going-second P(>=1 hand trap in 6) ~0.47; no going-second board data (Inferred) |
| D9 | Offensive Pressure & Closing Power | 60 | Link bosses at 2600 to 2900 ATK plus Marincess Great Bubble Reef and Marbled Rock threaten lethal (Verified stat, Inferred closing) |
| D10 | Main Deck Efficiency & Flexibility | 45 | 52 Main cards with only 13.9% exact-archetype purity; sub-archetypes Marincess (31), generic (15) and Mulcharmy/Roid/Daedalus dilute the core (Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 30 | 20 Extra cards exceed the 15-card limit, so the Extra slot is illegal and over-committed (Verified) |
| D12 | Side Deck Adaptability | 10 | No Side Deck at all (0 cards), so no post-side adaptability (Verified) |
| D13 | Matchup Coverage & Format Fit | 45 | No tournament link or dated meta sample; only archetype-level context (Provisional) |
| D14 | Pilotability & Error Tolerance | 40 | Multi-link, multi-Xyz sequencing and many similar-named Marincess effects are error-prone (Inferred) |
How the score was computed
Strategy profile: Combo primary, Midrange secondary (disclosed, not applied to the score). Structural ≈ 52.7, Going First ≈ 55, Going Second ≈ 48, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: Extra Deck over limit (-10); No Side Deck (-2). Final formula: Pre-cap: 0.80*Structural(52.7) + 0.20*TournamentReliability(45) + modifiers(-12) = 39.2; Illegal cap applied, final = 30. Meta Power provisional (null).
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.27 · 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 consistency is very high (31 Marincess copies, P(>=1) ~0.99)
- Layered interaction: Ash Blossom x2, Marincess Wave, Bubble Ring, Nibiru and removal-text bosses
- Large Link and Xyz boss options at 2600 to 2900 ATK
Weaknesses
- Illegal: Extra Deck of 20 exceeds the 15-card limit
- No Side Deck, so no post-side adaptability
- Low exact-archetype purity (13.9%) with many off-archetype copies
Critical choke points
- Marincess Springirl, Sea Horse and Blue Tang (3 copies each) are the main starter route; each has about a 0.27 chance per opening hand
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | One Extra Deck card (e.g. Number 4: Stealth Kragen or Number 103: Ragnazero) | None | Brings the Extra Deck to 15 and makes the list legal; without this the deck is capped at 30 |
| 2 | Off-archetype 1-copy tech cards outside the engine | A 15-card Side Deck of Marincess and hand-trap answers | Restores post-side adaptability (D12) and a best-of-3 plan |
| 3 | Mulcharmy or Speedroid copies that do not feed Marincess links | Additional Marincess starters or searchers | Raises archetype purity (D10) and starter density (D1) |
Evidence & confidence
- Verified: Extra Deck count is 20 against a maximum of 15 (status Illegal); Ash Blossom & Joyous Spring is 2 copies, within its Semi-Limited limit of 2; Side Deck count is 0; Exact-name archetype purity is 13.9%, with 62 off-archetype copies
- Inferred: Starter and searcher hypergeometric estimates (P(>=1) ~0.27 and ~0.85); Interaction density from negation and removal card text; Going-second hand-trap estimate (~0.47)
- Provisional: Meta Power (null, no dated metagame sample); Matchup fit and tournament reliability (no tournament link)
- Data gaps: No combos supplied: floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry (going-first/second, matchup, brick and OTK rates) Meta Power is provisional without a dated metagame sample No Side Deck supplied, so post-side is unevaluable
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