Umi Deck #772305 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Tempo
• 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 board via Atlantis, City of the Sea Dragon and Levia-Dragon / Azure Ocean Dragon Lord link-into-Umi lines, closing with Poseidra, Moulinglacia and Levia-Dragon boards; Xyz and Link beats (Poseidra Abyss, Abysstrite, Mermail Abyssgaios) recurring Mermail and Atlantean monsters
• Turn 1 (going first): Open with Neptabyss, Mermail Shadow Squad or Mulcharmy Purulia to draw and search Atlantis-named cards, then place Atlantis, City of the Sea Dragon and Advent of Atlantis to bring Umi-name monsters into play
• Turn 2 (going second): Hold Ash Blossom, Dominus Impulse, Maxx C and Infinite Impermanence to answer the opponent's first board, then rebuild through Warchief of Atlantis and Monster Arms of Atlantis recursion
• Recovery: Use GY-sent effects (Warchief, Atlantean Dragoons, Atlantean Heavy Infantry, Mermail Abysspike) to add searchers and special summon back-line monsters after interaction
• After siding: Not evaluable: the export contains no side deck (0 side cards), so no post-side plan can be scored

Why it scores here

This list is illegal in OCG as submitted: it runs 2 Bahamut Shark and 1 Barrier Statue of the Torrent, both Forbidden, so per the rubric it is capped at a structural-only score of 30 and no normal contextual score is given. Setting that aside, the system reads as a moderately consistent Atlantean/Umi shell: Atlantis-named starters and searchers (Advent of Atlantis, Warchief, Neptabyss, Mermail Shadow Squad) give a 0.85 chance of at least one archetype-core card in the opening hand (Inferred hypergeometric estimate), and the Ash Blossom, Dominus Impulse, Maxx C and Infinite Impermanence package gives real interaction on the going-second side. The weaknesses are the 55 off-archetype copies with no exact-name Umi core, a 15-card Extra Deck spread across Xyz, Link and Synchro, and zero side deck, so post-side adaptability and matchup fit cannot be credited. No combo boards, tournament link or win-rate telemetry exist, so floor, median and ceiling are text-only estimates. Popularity (archetype usage stats) confirmed the list is real, but no points were earned from it, and no card scores were averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Balanced (default; primary strategy unclear). Structural ≈ 48, Going First ≈ 46, Going Second ≈ 50, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: banlist exposure (-12); illegal_cap (-4). Final formula: Structural 48.4 (Balanced weights); no-meta formula 0.80*Structural + 0.20*TournamentReliability = 46.7, then modifier -12 for banlist exposure gives 34.7; Illegal cap applied, final score 30 (theoretical/structural-only)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.85 · 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 Atlantean/Atlantis searcher and recursion network with 14 searcher-text cards
• Six hand traps plus two Semi-Limited negation spells give going-second interaction
• Extra Deck covers Xyz, Link and Synchro boss monsters at 2800 to 3000 ATK

Weaknesses

• Illegal in OCG: two Forbidden Bahamut Shark copies and one Forbidden Barrier Statue
• No side deck, so no post-side adaptability
• 55 off-archetype copies dilute the Umi core and no exact Umi name is run
• No combo data or telemetry, so consistency and median output are inferred

Critical choke points

• Forbidden cards must be removed before the list is legal, which changes the Extra Deck and Main shape
• Atlantis, City of the Sea Dragon (single copy) is the field anchor for most Umi lines
• Advent of Atlantis (2 copies) is the main route to Atlantis-named cards

Recommended changes

Evidence & confidence

• Verified: Illegal status: Bahamut Shark x2 and Barrier Statue of the Torrent x1 are Forbidden in OCG; Main 40 and Extra 15 are inside size rules; side is 0; Ash Blossom x2 and Dominus Impulse x2 are at their Semi-Limited limit; Maxx C x1 is at its Limited limit; Archetype core probability and hypergeometric draw odds from the resolved list
• Observed: Archetype usage stats confirm Umi core cards (e.g. Atlantis, Advent of Atlantis, Warchief) are commonly run
• Inferred: Starter reliability (about 0.85 at least one core card in 5-card opener); Brick and recursion estimates; Going-second hand-trap coverage quality; Dimension scores D1 to D14
• Provisional: Meta Power and matchup or format fit (no dated metagame sample)
• Data gaps: no combos supplied: floor, median and ceiling are text-only inference no tournament link: archetype meta-share and per-pilot record absent no win-rate telemetry (going-first/second, matchup, brick/starter/OTK rates) no side deck in the export: post-side plan is unscoreable deck title is null Meta Power is Provisional unless a dated metagame sample is supplied