Umi Deck #771054 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 43/100 (±10 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Toolbox, Link/Xyz/Synchro/Fusion
• Format: ocg

Legality

Main 56 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Umi/Atlantis engine: Atlantis, City of the Sea Dragon field plus Atlantean and Abyss- Level 7 Xyz and Link boss monsters (Poseidra Abyss, Abysstrite, Worldsea Dragon Zealantis, Levia-Dragon Daedalus); Fusion and Synchro boss monsters (Mudragon of the Swamp, Brionac, Deep Sea Repetiteur) as follow-up pressure when the engine is disrupted
• Turn 1 (going first): Open a Level 3 or lower Sea Serpent or Atlantean searcher (Neptabyss, First Penguin, Atlantean Dragoons) to reach Atlantis-named starters and build toward a Link or Xyz boss; hold Ash Blossom and Ghost Ogre for disruption
• Turn 2 (going second): Use the 9 hand traps and Evenly Matched to answer the opponent's board, then rebuild through Warchief and Siren Vortex recursion into Umi Link or Xyz boss summons
• Recovery: Recursion from the Graveyard through Warchief of Atlantis, Abyssrhine, Monster Arms of Atlantis and Mermail Shadow Squad, plus Advent of Atlantis searches, to replace lost starters
• After siding: Not available: the deck runs no Side Deck (Side Deck size 0), so there is no recorded post-side plan

Why it scores here

This is a theoretical, structural-only read because the list is Illegal: three cards (Ash Blossom and Joyous Spring, Dominus Impulse, Super Polymerization) are run at 3 copies against a Semi-Limited limit of 2, so no normal Final Contextual score applies and the result is capped low. Consistency is the deck's main strength: the 20 searcher-text cards give a Inferred probability of about 0.90 for at least one searcher in an opening 5-card hand, and the 16-card Atlantean and Atlantis core has about 0.83 chance of at least one card in hand. Interaction is dense (9 hand traps, 14 negation-text cards, 16 removal-text cards), which carries the going-second and end-board scores. The Extra Deck is well stocked with Xyz, Link, Synchro and Fusion bosses, which supports the closing score. The score comes from consistency, interaction and boss coverage on the whole system, not from averaging the card scores and not from the archetype's popularity; no combos, win rates or tournament data exist, so median and ceiling output stay inferred and the Side Deck is empty.

Dimension scores

How the score was computed

Strategy profile: Midrange primary, no secondary weighting applied. Structural ≈ 57.5, Going First ≈ 55, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist exposure (-10); no Side Deck (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) = 0.80*57.5 + 0.20*45 = 55, then modifiers -12 for Illegal status and banlist exposure = 43; theoretical/structural-only because the deck is Illegal

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

• Dense searcher coverage gives about 0.90 chance of a starter in the opening 5 cards
• Nine hand traps plus negation and removal text give broad interaction for going second
• Extra Deck bosses reach 2500 to 3000 ATK across Link, Xyz and Synchro

Weaknesses

• Illegal as built: three Semi-Limited cards exceed their copy limit
• No Side Deck, so no post-side adaptation
• Many conditional Atlantis and Umi effects with a mixed archetype core lower consistency and pilotability

Critical choke points

• Losing the Atlantis, City of the Sea Dragon field spell stops most Umi transforms and Atlantis-named Link and Xyz summons
• A single Link or Xyz boss in hand is required to close the game, so one hand-trapped starter can end the turn

Recommended changes

Evidence & confidence

• Verified: Legality: 56 Main, 15 Extra, 0 Side; three cards over copy limit (Semi-Limited); Card text and stats for all 37 distinct cards from the evidence pack; Archetype spread: 14 Atlantis, 9 Atlantean, 5 Daedalus, 4 Abyss-
• Observed: Archetype usage stats: the core covers 7 of 16 cards (43.8%) present in this list
• Inferred: Searcher availability ≈ 0.90, Atlantis core ≈ 0.83, hand-trap at 6 cards ≈ 0.67; Interaction density and boss coverage ratings; Going-first and going-second estimates
• Provisional: Meta Power is null; no dated metagame sample; Format fit (D13) set near neutral
• Data gaps: No combos supplied: floor, median and ceiling are text-only inference No tournament link: archetype meta-share and pilot match record absent No win-rate telemetry for going-first, going-second, matchup or brick rate Meta Power is Provisional without a dated metagame sample Deck title is null in the export