Umi Deck #772407 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±8 · Confidence: Medium)

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

Legality

Main 40 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Umi / Atlantis field-driven board of WATER Link and Xyz monsters converting into Atlantean and Daedalus pressure, with Azure Ocean Dragon Lord - Neo-Daedalus Rage and Levia-Dragoon - Daedalus as the Extra Deck closers; Poseidra Abyss and Abysstrite Xyz pressure once the Abyss- and Atlantean monsters are on board
• Turn 1 (going first): Activate Atlantis, City of the Sea Dragon or Advent of Atlantis, search an Atlantean or Atlantis monster, then Special Summon through Umi-name effects toward a Link 4 or Link 3 Extra Deck monster
• Turn 2 (going second): Hold Ash Blossom and Dominus Impulse or Droll and Lock Bird for the opponent's first summon or search, then rebuild the Umi board from the GY and Deck
• Recovery: Recover through Warchief of Atlantis, Monster Arms of Atlantis and Levia-Dragon - Daedalus from the GY, plus Call of Atlantis to re-search an Atlantis monster
• After siding: No side deck is registered, so no post-side plan can be scored; the deck has 0 side cards

Why it scores here

The deck is scored as a connected Umi system, not as an average of its 40 main-deck and 15 Extra-deck cards. Its opening reliability is strong: the archetype-core proxy gives P(at least one core card in a 5-card opening hand) of about 0.95, and searcher text covers 22 copies, so the engine usually has a first search. Conversion is credible but unmeasured, since no recorded boards exist and the ceiling is text-only inference from the Link and Xyz routes. Interaction is layered through Ash Blossom, Droll and Lock Bird, Maxx C, Dominus Impulse and Daedalus Maelstrom, which lifts the end-board and going-second scores. The score is held down by the illegal list (two Forbidden cards, so the structural-only cap applies), the absence of a side deck, and the lack of any tournament or win-rate evidence. Archetype popularity earned no points, and the 0.8/0.2 blend was capped at 35 because the list is illegal.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 58, Going First ≈ 62, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 52. Modifiers: banlist exposure (-12); illegal-deck cap (-9). Final formula: Illegal cap applied: 0.80*58 + 0.20*52 = 56.8 before modifiers; banlist exposure -12 gives 44.8; capped to 35 as theoretical/structural-only because the list is illegal (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.95 · key two-card combo ≈ — · full-brick estimate ≈ 0.05 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Opening reliability: archetype-core proxy around 0.95 for at least one core card in a 5-card hand
• Layered negation through four hand traps plus Dominus Impulse and Daedalus Maelstrom
• Full Extra Deck (15) with Link, Xyz and Synchro closers and recursion through GY effects

Weaknesses

• Illegal list: Barrier Statue of the Torrent and Bahamut Shark are Forbidden in OCG
• No side deck, so no post-side adaptation
• No recorded boards or win-rate evidence to confirm the ceiling or median output

Critical choke points

• The Atlantis field and Umi-name effects gate most lines; removing Atlantis, City of the Sea Dragon weakens the engine
• Forbidden Barrier Statue would be a floodgate that the list cannot legally run

Recommended changes

Evidence & confidence

• Verified: Legality: Illegal with two Forbidden cards over the copy limit (Barrier Statue of the Torrent, Bahamut Shark); Main Deck 40 and Extra Deck 15 meet the OCG size rules; side deck is 0; Archetype-core proxy P(at least one in 5-card hand) ≈ 0.95; Archetype-stat core coverage 9 of 16 cards present (56.2 percent)
• Inferred: Opening-hand consistency from hypergeometric and archetype-core proxy; Interaction density from hand-trap and negation text; Going-first and going-second estimates from text and composition
• Provisional: Meta Power and matchup fit (no dated meta sample); Median and ceiling combo output (no recorded boards)
• 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 No side deck registered (side_count 0), so post-side adaptation cannot be scored