Umi Deck #768474 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±10 · Confidence: Low)

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

Legality

Main 56 / Extra 15 / Side 0 — status: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Board pressure from Link and Fusion bosses in the Extra Deck (Azure Ocean Dragon Lord - Neo-Daedalus Rage 2900 ATK, Levia-Dragoon - Daedalus 2600 ATK, Worldsea Dragon Zealantis 2500 ATK), reached through the Umi / Atlantis / Daedalus engine.; Going-second hand-trap disruption (9 hand traps, including 3 Ash Blossom and 3 Infinite Impermanence) followed by a Link or Fusion summon.
• Turn 1 (going first): Starter and searcher lines (Fish Sonar, First Penguin, Mulcharmy Purulia) feed Atlantis / Umi monsters, then Warchief of Atlantis and Levia-Dragon - Daedalus build toward a Link Summon. Probability-based estimate only; no recorded boards.
• Turn 2 (going second): Open with hand traps (Ash Blossom, Infinite Impermanence, Nibiru) to stop the opponent's first play, then rebuild the Umi engine from the remaining hand and deck searches.
• Recovery: Searcher-heavy list (20 searcher-text cards) and recursion from the GY (Warchief, Monster Arms, Levia-Dragon) to rebuild after disruption. Recovery is not tested against real boards.
• After siding: No side deck is registered (side_count 0), so there is no post-side plan. Best-of-3 adaptation is unavailable as built.

Why it scores here

The deck is illegal as built: it runs 3 copies each of Ash Blossom & Joyous Spring and Super Polymerization against OCG limits of 2, so the final score is capped at 30 and the result is theoretical and structural only. Structurally, the Umi / Atlantis / Daedalus engine has good starter access (about 0.92 chance of at least one archetype-core card in a 5-card opening hand, Inferred), a strong hand-trap package for going second, and a Link/Fusion Extra Deck with large bosses. Consistency is held back by sprawl: only 3 exact-name Umi copies out of 71 archetype-linked cards, with 68 off-archetype copies across Atlantis, Daedalus, Mulcharmy, Kairyu-Shin and generics. No recorded combos, tournament data or guides exist, so the combo floor and ceiling are text-only inference. Popularity and usage stats were not used to earn points, and card scores were not averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 52, Going First ≈ 50, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: banlist exposure (over-limit Semi-Limited cards) (-4). Final formula: Pre-cap: 0.80*Structural(52) + 0.20*TournamentReliability(42) + modifiers(-4) = 46; Illegal-deck cap applied → 30. Meta Power provisional (null).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.92 · key two-card combo ≈ — · full-brick estimate ≈ 0.09 (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 redundant starters.
• Nine hand traps plus Ash Blossom and Infinite Impermanence give interaction for going second.
• Extra Deck closers (Neo-Daedalus Rage, Levia-Dragoon, Zealantis) reach 2500–2900 ATK.

Weaknesses

• Illegal as built: Ash Blossom and Super Polymerization exceed the copy limit of 2.
• Low exact-name Umi purity (4.2%); 68 off-archetype copies dilute the engine.
• No side deck, so there is no best-of-3 adaptation.
• Tech-heavy main deck (13 tech cards) competes with the engine for slots.

Critical choke points

• Opening-hand starter access depends on the archetype core; roughly 8.5% of 5-card hands lack it.
• Over-limit Ash Blossom and Super Polymerization must be reduced before the list can be played.

Recommended changes

Evidence & confidence

• Verified: Legality: Illegal, Ash Blossom and Super Polymerization each at 3 copies against a limit of 2 (OCG BanList).; Main 56 and Extra 15 are within OCG size rules; side is 0.; Composition: 24 distinct main cards, 11 distinct extra cards, 9 Link / 4 Fusion / 2 Synchro, 4.2% exact-name purity.
• Observed: Usage stats: Atlantis and Daedalus Maelstrom are present at 73–77% inclusion, and Mulcharmy Purulia at 69%; 9 of 16 core cards are present (56.2%).
• Inferred: Opening-hand starter access ≈ 0.915 (archetype-core group).; Hand-trap coverage on the going-second draw ≈ 0.67.; Combo, resilience and closing ratings based on card text.
• Provisional: Meta Power and matchup fit: no dated metagame sample or tournament link.
• 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 exists: going-first/second, matchup and brick rates are Inferred or Unknown. No side deck: post-side and best-of-3 adaptation cannot be evaluated. Meta Power is provisional unless a dated metagame sample is supplied.