Umi Deck #768529 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±10 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Combo, Toolbox
• Format: ocg

Legality

Main 45 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Link Summon Umi/Daedalus/Marincess Link monsters (Neo-Daedalus Rage 2900 ATK, Levia-Dragoon 2600 ATK, Great Bubble Reef 2600 ATK) off Atlantis/Umi board presence; Synchro/Xyz pressure from Adamancipator Risen - Dragite and LeVirtue Dragon after Umi board is established
• Turn 1 (going first): Fish Sonar or First Penguin / Mulcharmy Purulia for a searched Umi or Atlantis monster, then Advent of Atlantis or Atlantis field spell to enable Level and Link lines
• Turn 2 (going second): Hand traps (Ash Blossom, Infinite Impermanence, Dominus Impulse, Mulcharmy Purulia) to answer the opponent's first board, then rebuild through Marincess and Daedalus Link Summons
• Recovery: GY recursion via Warchief of Atlantis, Marincess Blue Tang, Trickstar Aqua Angel and Call of Atlantis, plus Link Summon from GY material routes
• After siding: Not supported: the deck has no Side Deck, so no post-side plan exists in a best-of-3 event

Why it scores here

The score comes from the deck as a system: the searcher-text group (16 cards) gives a roughly 90% chance of at least one searcher in the opening 5, and the Umi/Atlantis/Marincess/Daedalus Link routes give real closing power in the Extra Deck. Interaction is dense (six hand traps plus removal and negation text), which lifts the endboard and resilience dimensions. Median output and combo floor are weak because there are no recorded boards, and the deck spreads across about seven sub-archetypes (only 11.7% exact-name Umi purity), which lowers main deck efficiency and pilotability. Popularity did not earn points: the archetype core is common in the format, but that only confirms the list is real. The deck is Illegal (three copies each of two Semi-Limited cards), so its structural result is capped at 25 and the evaluation is structural-only. Card scores were not averaged.

Dimension scores

How the score was computed

Strategy profile: Midrange primary; Combo secondary used only for the Extra-Deck and combo-conversion weighting. Structural ≈ 54, Going First ≈ 58, Going Second ≈ 52, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: banlist_exposure (-5). Final formula: Illegal cap: normal formula 0.80*Structural(54) + 0.20*TournamentReliability(42) + Modifiers(-5) = ~47, capped at 25 because the deck is Illegal; the result is structural-only. Meta Power is provisional (null).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.9 · 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

• Searcher density: 16 searcher-text cards, with about 90% chance of one in the opening 5
• Interaction: 6 hand traps and 16 negation-text cards give layered answers
• Extra Deck: 10 Link monsters with 2600-2900 ATK closers and 2 Xyz/3 Synchro coverage

Weaknesses

• Illegal as built: 3 copies each of Ash Blossom and Dominus Impulse (limit 2)
• Low exact archetype purity (11.7%) across about seven sub-archetypes, which weakens engine coherence
• No side deck, so there is no post-side adaptation
• No recorded combo boards, so floor and median output are unmeasured

Critical choke points

• The Atlantis field spell and Umi-named monsters are the enablers for most Link and Level lines; losing them to a single removal or Ash Blossom response breaks the plan
• Hand-trap dependence: going second relies on 6 hand traps with about 60% chance of at least one in a 6-card hand

Recommended changes

Evidence & confidence

• Verified: Deck is Illegal: Ash Blossom and Dominus Impulse at 3 copies against a limit of 2; Main 45, Extra 15, Side 0; Archetype purity 11.7% (7 exact-name copies of 60); Searcher-text group 16 copies; hand-trap group 6 copies
• Observed: Archetype usage shows Atlantis, Daedalus Maelstrom and Mulcharmy Purulia are core cards (inclusion 69-77%)
• Inferred: Consistency: P(>=1 searcher in 5) ~0.90 from hypergeometric estimate; Interaction density from card text (negation/removal/hand-trap hints); Combo ceiling read from Link and Atlantis card text (no recorded boards); Going-first and going-second estimates
• Provisional: Meta Power is null; Matchup/format fit (D13) is provisional with no dated metagame sample
• 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 are absent No win-rate telemetry for going-first/second, matchups or brick rates Meta Power is provisional: no dated metagame sample No guides attached (0 guides for Umi) No full-brick or two-card combo probability computed in the evidence