Umi Deck #771860 — Yu-Gi-Oh! OCG
59 Main, 15 Extra, incl. Abyssrhine, the Atlantean Spirit x3, Atlantean Dragoons x3, Mermail Shadow Squad x3. Created Oct 21, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/21/2026
Main Deck (59)
- Abyssrhine, the Atlantean Spirit x3
- Atlantean Dragoons x3
- Atlantean Heavy Infantry x1
- Droll & Lock Bird x1
- Eria the Water Channeler x2
- Levia-Dragon of Atlantis - Daedalus x1
- Mermail Abysspike x1
- Mermail Shadow Squad x3
- Monster Arms of Atlantis x1
- Moulinglacia the Elemental Lord x1
- Mulcharmy Fuwalos x3
- Mulcharmy Purulia x3
- Neptabyss, the Atlantean Prince x3
- Poseidra, the Storming Atlantean x2
- Siren Vortex of Atlantis x1
- Warchief of Atlantis x1
- Ash Blossom & Joyous Spring x3
- Deep Sea Minstrel x1
- Icejade Ran Aegirine x2
- Lappis Dragon x1
- Abyss-sting Triaina x1
- Advent of Atlantis x1
- Atlantis, City of the Sea Dragon x1
- Call of Atlantis x1
- Forbidden Droplet x3
- Instant Fusion x1
- Lightning Storm x1
- One for One x1
- Triple Tactics Thrust x2
- Daedalus Maelstrom x1
- Dominus Impulse x3
- Evenly Matched x2
- Solemn Judgment x1
- Solemn Strike x1
- Solemn Warning x1
- Virtue Stream x1
Extra Deck (15)
- Elder Entity Norden x1
- Azure Ocean Dragon Lord - Neo-Daedalus Rage x1
- Levia-Dragoon - Daedalus x1
- Marincess Coral Anemone x1
- Mediclius the Extraordinary Power Patron x1
- Mermail King - Neptabyss x1
- Adamancipator Risen - Dragite x1
- Icejade Gymir Aegirine x1
- Swordsoul Supreme Sovereign - Chengying x1
- Deep Sea Prima Donna x1
- Abysstrite, the Atlantean Spirit x1
- LeVirtue Dragon x1
- Mermail Abyssgaios x1
- Poseidra Abyss, the Atlantean Dragon Lord x1
- Toadally Awesome x1
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35± 10/ 100
Power Score
Structural
58
Reliability
45
Going First
55
Going Second
60
Deck — Deck Power Evaluation
Final Contextual Deck Power: 35/100 (±10 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 58 |
| Going First | 55 |
| Going Second | 60 |
| Meta Power | provisional |
| Tournament Reliability | 45 |
- Primary strategy: Combo
- Secondary strategies: Midrange
- Format: ocg
Legality
Main 59 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).
Identity & game plan
- Win condition: Umi/Atlantis-engine Link, Xyz and Synchro boards (Poseidra, Levia-Dragon - Daedalus, Azure Ocean Dragon Lord, Poseidra Abyss) built from WATER monsters (Inferred); Direct-attack pressure from Atlantean Dragoons plus 2800+ ATK Extra Deck bosses (Inferred)
- Turn 1 (going first): Open a WATER starter (Atlantean, Mermail or Mulcharmy), search Atlantis, City of the Sea Dragon or Advent of Atlantis to set up Umi, and hold hand traps for the opponent's first summon (Inferred)
- Turn 2 (going second): Use the six-card hand's hand traps (Ash Blossom, Droll & Lock Bird, Evenly Matched, Dominus Impulse) and Solemn Judgment, Strike and Warning to stop the opponent's board, then rebuild through searchers (Inferred)
- Recovery: Recover through GY-triggered searches and summons (Mermail Abysspike, Warchief of Atlantis, Atlantean Heavy Infantry) and the Mulcharmy draw effects (Inferred)
- After siding: No side deck is registered, so there is no post-side plan; this is a best-of-3 gap (Provisional)
Why it scores here
The deck reliably opens a WATER starter about 24% of the time in a 5-card hand with three copies of a card and 85% of the time with the 18 searcher-text cards, so the engine is accessible but not guaranteed on turn 1 (Inferred). Its conversion comes from a broad Extra Deck of 2800-3000 ATK bosses and Link/Xyz/Synchro routes, which lifts the closing score, but no recorded boards exist, so the ceiling and floor are text-only reads (Inferred). Interaction is dense (three Solemns, Ash Blossom, Droll & Lock Bird, Evenly Matched, Dominus Impulse, Lightning Storm), which protects the engine on the opponent's turn; the score is not earned from popularity (archetype core inclusion is only 50% present) and card scores were not averaged. The deck is illegal as built (Ash Blossom and Dominus Impulse each run 3 copies against 2 legal), has no side deck and no tournament or win-rate data, so the score is capped at 35 and is structural only.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 62 | P(>=1 of a 3-copy starter in 5 cards) ≈ 0.24; P(>=1 searcher-text card) ≈ 0.85; archetype-core group P(>=1) ≈ 0.69 (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 55 | 22 singleton slots, 9 triple-copy slots and off-archetype spread across 21 sub-archetypes; brick risk is moderate with Mulcharmy draw effects as dead-hand insurance (Inferred) |
| D3 | Combo Conversion & Ceiling | 60 | Ceiling read from text only: Extra Deck bosses (Poseidra Abyss 3000 ATK, Azure Ocean Dragon Lord 2900) plus Umi/Atlantis recursion; no recorded boards (Inferred) |
| D4 | Combo Floor & Median Output | 45 | Median output cannot be measured: no combos supplied, so floor and median are estimated from starter diversity and interaction density only (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 62 | Six hand-trap-type cards and multiple independent starters (Atlantean, Mermail, Mulcharmy, Charmer) give redundant lines after one disruption (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 65 | 18 searcher-text cards and GY-trigger recursion (Warchief, Mermail Abysspike, Atlantean Heavy Infantry) regenerate resources across turns (Inferred) |
| D7 | End-Board & Interaction Quality | 70 | Three Solemns, Ash Blossom, Droll & Lock Bird, Evenly Matched, Dominus Impulse and Lightning Storm give layered interaction, but no on-field protection beyond Daedalus Maelstrom (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 62 | Going-second hand is six cards with about 49% chance of a hand trap; hand traps and Solemns challenge a board but there is no direct board-breaker beyond Lightning Storm (Inferred) |
| D9 | Offensive Pressure & Closing Power | 72 | Extra Deck offers 2800-3000 ATK bosses and Atlantean Dragoons gives direct attacks; closing power is high on the system (Verified stats from card text, Inferred conversion) |
| D10 | Main Deck Efficiency & Flexibility | 50 | 59 main-deck cards with 36 distinct names and 74 off-archetype copies; over-limit cards and no exact-name archetype purity lower efficiency (Verified composition) |
| D11 | Extra Deck Efficiency & Coverage | 60 | All 15 Extra Deck slots are filled with Link, Xyz, Synchro and Fusion options spanning the engine; several are single-copy with no redundancy (Verified composition) |
| D12 | Side Deck Adaptability | 5 | No side deck is registered (0 cards), so no post-side adaptability can be credited (Verified) |
| D13 | Matchup Coverage & Format Fit | 45 | No tournament link or dated meta sample; archetype meta-share is unavailable, so format fit is Provisional |
| D14 | Pilotability & Error Tolerance | 35 | Multi-engine sequencing with many named triggers and Link/Xyz/Synchro chains is demanding for repeatable play (Inferred) |
How the score was computed
Strategy profile: Combo. Structural ≈ 58, Going First ≈ 55, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist exposure (-10); no Side Deck (-2). Final formula: 0.80*Structural(58) + 0.20*TournamentReliability(45) = 55.4; Meta Provisional; modifiers -12 gives 43.4; Illegal-deck cap applied: final = 35 (theoretical/structural only)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.24 · 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 suite across hand traps, Solemns and Droll & Lock Bird
- Broad Extra Deck with 2800-3000 ATK bosses
- Many searcher and recursion effects give resource regeneration
Weaknesses
- Illegal as built: two cards over copy limit
- No side deck
- Three-copy starters only about 24% to appear in a 5-card opening hand
Critical choke points
- Atlantis, City of the Sea Dragon (1 copy) gates the Umi/Daedalus line
- Single-copy Extra Deck bosses (Poseidra Abyss, Azure Ocean Dragon Lord) depend on specific materials
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | 1 Ash Blossom & Joyous Spring | 1 legal-count replacement (any 2-copy-compliant tech or hand trap) | Brings Ash Blossom to its legal limit of 2 copies |
| 2 | 1 Dominus Impulse | 1 legal-count replacement (any 2-copy-compliant trap) | Brings Dominus Impulse to its legal limit of 2 copies |
| 3 | none | A side deck of 1-15 cards | Creates a post-side plan for best-of-3 and raises D12 from near zero |
Evidence & confidence
- Verified: Illegal status: Ash Blossom and Dominus Impulse at 3 copies vs 2 legal; Main deck 59 cards, Extra deck 15 cards, Side deck 0 cards; Archetype exact-name purity is 0%
- Inferred: Starter and searcher probabilities from the hypergeometric table; Combo strategy and going-first/second plans from card text; Interaction density from role tags
- Provisional: Meta Power (null, no dated sample); Matchup and format fit (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, game-level, brick/starter/OTK rates) — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied Deck has no side deck; post-side plan cannot be evaluated
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