Umi Deck #768455 — Yu-Gi-Oh! OCG
41 Main, 15 Extra, incl. First Penguin x3, Mulcharmy Purulia x3, Neptabyss, the Atlantean Prince x3. Created Oct 20, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/20/2026
Main Deck (41)
- Abyssrhine, the Atlantean Spirit x1
- Atlantean Dragoons x2
- Atlantean Heavy Infantry x1
- Droll & Lock Bird x1
- First Penguin x3
- Levia-Dragon of Atlantis - Daedalus x1
- Maxx "C" x1
- Monster Arms of Atlantis x2
- Mulcharmy Purulia x3
- Neptabyss, the Atlantean Prince x3
- Ocean Dragon Lord - Kairyu-Shin x1
- Poseidra, the Storming Atlantean x2
- Siren Vortex of Atlantis x2
- Warchief of Atlantis x3
- Magicalibra x1
- Ash Blossom & Joyous Spring x2
- Advent of Atlantis x2
- Atlantis, City of the Sea Dragon x1
- Call of Atlantis x1
- Fish Sonar x3
- Instant Fusion x1
- Daedalus Maelstrom x1
- Dominus Impulse x2
- Virtue Stream x1
Extra Deck (15)
- Elder Entity Norden x1
- Azure Ocean Dragon Lord - Neo-Daedalus Rage x2
- Levia-Dragoon - Daedalus x2
- Marincess Coral Anemone x1
- Brionac, Dragon of the Ice Barrier x1
- Deep Sea Repetiteur x1
- Abysstrite, the Atlantean Spirit x1
- Bahamut Shark x2
- LeVirtue Dragon x1
- Mermail Abyssgaios x1
- Poseidra Abyss, the Atlantean Dragon Lord x1
- Toadally Awesome x1
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30± 8/ 100
Power Score
Structural
55
Reliability
52
Going First
55
Going Second
50
Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 55 |
| Going First | 55 |
| Going Second | 50 |
| Meta Power | provisional |
| Tournament Reliability | 52 |
- Primary strategy: Midrange
- Secondary strategies: Toolbox, Tempo
- Format: ocg
Legality
Main 41 / Extra 15 / Side 0 — status: Illegal. 1 violation(s).
Identity & game plan
- Win condition: Umi-field Atlantis engine producing high-ATK Link/Xyz/Synchro boards (Poseidra Abyss, Levia-Dragon - Daedalus) that close through direct attacks and size; Recursion from the GY (Warchief of Atlantis, Atlantean Dragoons, Atlantean Heavy Infantry) to repeatedly rebuild the board
- Turn 1 (going first): Normal Summon a searcher-starter (First Penguin, Neptabyss, Mulcharmy Purulia, Warchief), search Atlantis or Umi pieces, and place Atlantis, City of the Sea Dragon to turn on Umi
- Turn 2 (going second): Use Ash Blossom, Droll & Lock Bird, Maxx C, Dominus Impulse or Daedalus Maelstrom to disrupt, then rebuild through GY recursion
- Recovery: Recover from the GY through Warchief and Atlantean Dragoons effects, with Advent of Atlantis and Fish Sonar as extra searchers
- After siding: None: the deck has zero Side Deck cards, so there is no post-side plan in the evidence
Why it scores here
This OCG Umi list reliably opens a searcher-dense starter package: about 97% of opening hands (Inferred, from the 20-copy archetype core) contain at least one core card, and 20 searcher-text cards provide redundancy. Its GY recursion and four hand traps plus several Limited and Semi-Limited interaction cards give it a credible resilience and interaction profile, while Poseidra Abyss and Levia-Dragon give it a closing board. The score is nonetheless capped because the list is Illegal: two Bahamut Shark copies are Forbidden with zero legal copies, so the normal Final Contextual score is not awarded and the 30 is a theoretical structural read only. No combo boards, tournament link, or win-rate data exist, so popularity and archetype usage do not earn points, and the card scores were not averaged.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 62 | P(at least one of the 3-copy starters in a 5-card hand) ≈ 0.33 each, but the 20-copy archetype core gives ≈ 0.97 at least one core card in hand (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 58 | 12 singletons and 20 searcher-text cards reduce dead hands; a conflicting Normal Summon pattern is unverified (Inferred) |
| D3 | Combo Conversion & Ceiling | 55 | No parseable boards exist; the ceiling is a text-only read of Atlantis/Umi Link and Xyz routes (Inferred) |
| D4 | Combo Floor & Median Output | 45 | No combos_evidence, so median output is unmeasured and is held near the midpoint (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 62 | Four hand traps, Ash, Droll and Maxx C, plus GY recursion give several independent lines (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 65 | Searchers and GY-revival effects (Warchief, Atlantean Dragoons) regenerate resources across turns (Inferred) |
| D7 | End-Board & Interaction Quality | 60 | Dominus Impulse, Daedalus Maelstrom, Virtue Stream and Call of Atlantis give layered negation and removal, but only one Mermail Abyssgaios is present and no Azure copies (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 55 | Going-second disruption is present through Ash, Droll, Maxx C and Dominus, but there is no going-second data (Inferred) |
| D9 | Offensive Pressure & Closing Power | 65 | Poseidra Abyss (3000 ATK) and Levia-Dragon (2600 ATK) provide closing power, with Atlantean Dragoons able to attack directly (Verified card text, Inferred closing) |
| D10 | Main Deck Efficiency & Flexibility | 50 | 41 main cards across 24 distinct names with 12 singletons and an exact-name archetype purity of 5.4%, indicating a mixed multi-archetype build (Verified composition) |
| D11 | Extra Deck Efficiency & Coverage | 40 | 15 Extra slots, but 2 are the illegal Bahamut Shark, leaving 13 legal slots across Xyz, Link, Synchro and Fusion (Verified legality) |
| D12 | Side Deck Adaptability | 10 | The Side Deck is empty, so there is no adaptability and no post-side data (Verified) |
| D13 | Matchup Coverage & Format Fit | 50 | No tournament link and no dated meta sample; the archetype is only usage-stat context (Provisional) |
| D14 | Pilotability & Error Tolerance | 45 | Multi-step Atlantis, Umi and Daedalus interactions with Level and Umi renames raise pilot burden (Inferred) |
How the score was computed
Strategy profile: Midrange. Structural ≈ 55, Going First ≈ 55, Going Second ≈ 50, Meta = provisional, Tournament Reliability ≈ 52. Modifiers: banlist_exposure (-10); empty_side_deck (-2). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers = 0.80*55 + 0.20*52 - 12 = 42; Illegal cap applied, final 30 (theoretical/structural only)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.97 · key two-card combo ≈ — · full-brick estimate ≈ 0.03 (all Inferred)
- Combo output: best PowerIndex —, median —, board-per-starter —
- Turn order: 0 going-first lines vs 0 going-second lines
Strengths
- Dense searcher package (20 searcher-text cards) gives high starter access
- Four hand traps plus Ash, Droll, Maxx C and Dominus give interaction on both turns
- GY recursion (Warchief, Atlantean Dragoons, Heavy Infantry) regenerates resources
Weaknesses
- Illegal: two Forbidden Bahamut Shark copies in the Extra Deck
- Zero Side Deck cards
- Low exact-name purity (5.4%) across many sub-archetypes, with 12 singletons
Critical choke points
- Atlantis, City of the Sea Dragon (single copy) is the Umi enabler; losing it to disruption breaks most Umi lines
- Mulcharmy and Penguin hand-starts depend on empty-board or specific summon conditions
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | 2x Bahamut Shark | Legal Extra Deck options from the archetype usage list not yet in the deck, such as Azure Ocean Dragon Lord - Neo-Daedalus Rage or Levia-Dragoon - Daedalus | Removes the copy-limit violation that makes the list Illegal; the replacements are archetype-standard per usage stats, not verified in combos |
| 2 | None (side deck is empty) | A Side Deck of up to 15 cards, drawn from legal archetype-core candidates such as Marincess Coral Anemone or Toadally Awesome | Adds post-side adaptability, which is currently zero; the choice of cards is Provisional without matchup data |
Evidence & confidence
- Verified: Illegal status from the Bahamut Shark copy-limit violation (2 copies, 0 legal); Main 41, Extra 15, Side 0 counts and size rules; Card text and banlist status for the listed cards; Archetype purity 5.4% and copy histogram
- Observed: Usage statistics: 10 of 16 archetype-core cards present
- Inferred: Starter access ≈ 0.97 from the archetype-core hypergeometric estimate; Brick, resilience, interaction, recursion and going-second reads from card text; Closing power from listed ATK and Link text
- Provisional: Meta Power (null, no dated metagame sample); Matchup and format fit (D13)
- Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot match record absent No win-rate telemetry (going-first/second, matchup, brick and starter rates) exists in YGOVN Side deck is empty, so post-side behavior is unmeasured Meta Power is Provisional unless a dated metagame sample is supplied
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