Umi Deck #772844 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±10 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Stun, Link/Fusion/Synchro/Xyz mechanic tags
• Format: ocg

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Umi / Atlantis engine resolves into Link and Synchro boss monsters (Levia-Dragoon - Daedalus, Azure Ocean Dragon Lord - Neo-Daedalus Rage, Worldsea Dragon Zealantis) that pressure the board.; Mulcharmy draw-and-hand-advantage lines and hand-trap interaction that trade with the opponent's summons.
• Turn 1 (going first): Open with an Atlantis or Umi starter (Atlantis, City of the Sea Dragon, Advent of Atlantis, Fish Sonar, Warchief of Atlantis) to set up Umi for the Umi-conditional summons and the Link/Synchro bosses.
• Turn 2 (going second): Use hand traps (Ash Blossom & Joyous Spring, D.D. Crow, Droll & Lock Bird, Nibiru, Electric Jellyfish) to disrupt the opponent's summons, then convert through Umi-conditional monsters.
• Recovery: Recover through Warchief of Atlantis and Advent of Atlantis from the GY, Levia-Dragon of Atlantis - Daedalus revival, and Mulcharmy draws if the hand is emptied.
• After siding: Not applicable: the deck has no Side Deck (side_count 0), so there is no post-side plan.

Why it scores here

The deck reliably opens its Umi/Atlantis engine: the archetype-core group has about a 93% chance of at least one copy in a 5-card opening hand (Inferred). Its power comes from 9 hand traps and about 13 negation or removal texts, which give it solid going-second interaction, and from Link and Synchro bosses that can pressure the board once Umi is live. Floor and median output are weak because no recorded boards exist, so the conversion estimate is text-only (Inferred). The deck is capped low because three cards exceed the OCG copy limit (Ash Blossom & Joyous Spring, Dominus Impulse, and Super Polymerization each run 3 against a limit of 2), which makes it Illegal. The score does not come from Umi being a popular archetype or from averaging the individual card scores; it reflects the system-level read of consistency, interaction and conversion, and no usage or tournament share was used to raise it.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 52.6, Going First ≈ 50, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: Illegal copy-limit violations (-10); Banlist exposure (-4); No side deck (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional); Illegal cap applied, so the result is theoretical/structural-only

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.93 · key two-card combo ≈ — · full-brick estimate ≈ 0.07 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Hand-trap density (9 cards) and about 13 negation or removal texts give layered going-second interaction
• Archetype-core group is very likely to be live in an opening hand (Inferred)
• Link and Synchro bosses with 2500 to 2900 ATK provide closing power

Weaknesses

• Illegal list: three cards exceed the OCG copy limit
• No side deck, so no post-side adaptation
• No recorded combos, so floor and median output are unknown
• Mixed sub-archetypes (Umi, Atlantis, Daedalus, Mulcharmy, Kairyu-Shin) lower engine coherence

Critical choke points

• Umi must be on the field for most Umi-conditional summons and bosses; losing it to one answer shuts down the engine
• Going-first lines that depend on Atlantis or Umi starters with one-of Atlantis field access

Recommended changes

Evidence & confidence

• Verified: Legality: three cards over the OCG copy limit; main 55, extra 15, side 0; Card text and stats for all listed cards; Archetype-core copy counts and banlist status
• Inferred: Hypergeometric opening-hand estimates (≈0.93 archetype core, ≈0.68 hand trap going second); Text-only conversion and resilience reads; Interaction density from negation and removal text
• Provisional: Meta Power and format fit: no dated metagame sample or tournament link
• 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 or matchup telemetry in YGOVN Meta Power is Provisional unless a dated metagame sample is supplied Deck title is null and no side deck is present