Umi Deck #767167 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±8 · Confidence: Low)

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

Legality

Main 55 / Extra 15 / Side 0 — status: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Atlantis/Umi engine: searchers and Umi-field Link/Synchro/Xyz summons into a board-breaking Link-4 or Daedalus finisher (Inferred, text-only); Fusion via Super Polymerization and Mudragon, plus Sea Serpent beatdown from Levia-Dragon and Warchief (Inferred)
• Turn 1 (going first): Turn 1 searcher and Umi-field setup through Fish Sonar, Siren Vortex, Call of Atlantis, or First Penguin into Atlantis, then Link or Synchro extension (Inferred)
• Turn 2 (going second): Hand traps Ash Blossom, D.D. Crow, Droll and Nibiru to break the opponent's summon, then rebuild with Umi and Daedalus payoffs (Inferred)
• Recovery: Graveyard recursion from Warchief, Monster Arms and Daedalus Maelstrom, plus Advent of Atlantis field searches (Inferred)
• After siding: No side deck is built (side_count 0), so there is no post-side plan; the list is not legal as built

Why it scores here

The deck is Illegal as built: three cards (Ash Blossom & Joyous Spring, Dominus Impulse, Super Polymerization) are run at 3 copies against an OCG limit of 2, so the final score is capped low and labelled structural-only. Structurally the Umi/Atlantis engine reliably reaches a live starter, with about 96% odds of at least one core card in a 5-card opening hand and about 87% odds of a searcher, and the nine hand traps and negation text give it real interaction density. The combo ceiling and median output are not measurable here because no recorded boards were supplied, so both are text-only Inferred reads. Consistency is limited by the wide archetype spread across Atlantis, Daedalus, Mulcharmy and Penguin sub-archetypes, and a missing side deck removes any post-side adaptability. Popularity and archetype usage stats confirm the list is a real, accessible build, but they did not earn any points, and card scores were not averaged into the system score.

Dimension scores

How the score was computed

Strategy profile: 80% Midrange / 20% Toolbox (secondary read only; Stun not weighted). Structural ≈ 51, Going First ≈ 52, Going Second ≈ 48, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist_exposure (-12); illegal_cap (-13); no_side_deck (0). Final formula: Illegal cap applied: normal formula 0.80*Structural(51) + 0.20*TournamentReliability(45) + modifiers ≈ 50 before cap; capped to 25 because the list is Illegal (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.96 · key two-card combo ≈ — · full-brick estimate ≈ 0.04 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Core engine reaches a live starter in the opening hand about 96% of the time (Inferred)
• Searcher density of about 18 cards gives a fast, consistent search chain (Inferred)
• Nine hand traps and about 13 negation-text cards give broad interaction (Inferred)
• Strong Link-4 and Daedalus Link finishers in the Extra Deck (Verified composition)

Weaknesses

• Illegal as built: three cards over the OCG copy limit (Verified)
• No side deck, so no post-side plan (Verified)
• Low archetype purity (5.7% exact name) makes the engine less cohesive (Verified composition)
• No recorded combos, so combo floor, median and ceiling are unmeasured (Verified gap)

Critical choke points

• Umi field presence: many payoffs depend on an Umi or Atlantis monster being on the field
• Limited-status Droll & Lock Bird and Pot of Prosperity need single copies, so any overlap breaks the build

Recommended changes

Evidence & confidence

• Verified: Copy-limit violations for Ash Blossom, Dominus Impulse and Super Polymerization; Limited status of Droll & Lock Bird, Pot of Prosperity and S:P Little Knight at 1 copy each; Main 55 and Extra 15 are within the OCG size rules; Exact archetype purity 5.7% and role-tag counts
• Inferred: Starter and searcher probabilities (hypergeometric); Interaction density and negation-text read; Engine cohesion across Atlantis, Daedalus, Mulcharmy and Penguin sub-archetypes; Finisher and closing read from ATK values
• Provisional: Meta power and matchup fit (no dated sample or 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 side deck supplied — post-side plan cannot be evaluated no win-rate telemetry exists in YGOVN — going-first/second and matchup signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied