Mermail Deck #771378 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

• Primary strategy: Midrange
• Secondary strategies: Toolbox, Tempo
• Format: ocg

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Atlantean/Daedalus Link and Xyz boards (Mediclius, Archidux, Levia-Dragoon, Poseidra) led by Atlantean and Mermail searchers; Poseidra and Atlantean Dragoons provide pressure; Mulcharmy draw-engine grind and Atlantis field-driven Level reduction for Synchro and Xyz plays
• Turn 1 (going first): Open a Level 3 or 4 Atlantean or Mermail starter, search a second Atlantean via Neptabyss, Abysspike or Dragoons, then convert into a Link or Xyz board while holding Ash Blossom or Ghost Belle for the opponent's first activation
• Turn 2 (going second): Hold 14 hand traps (Ash Blossom, Ghost Belle, Infinite Impermanence, Evenly Matched, Droll and Lock Bird, Nibiru) to answer the opponent's first summon or search, then rebuild through Poseidra and Atlantean monsters
• Recovery: Mulcharmy Purulia or Fuwalos draw effects plus Atlantean and Mermail searchers refill the hand after a broken opening
• After siding: Not evaluable: the deck has no side deck (side_count 0), so there is no post-side plan

Why it scores here

This is an illegal OCG list: Ash Blossom & Joyous Spring runs 3 copies against a limit of 2, so the score is a structural, theoretical read only and is capped low. The Structural score (about 57) comes from the system, not from averaging card power. Its strengths are interaction density (14 hand traps, and an 84% chance of at least one hand trap in a 6-card going-second hand) and a high proxy chance of opening an archetype-core card (about 95%). Its weaknesses are the low exact-archetype purity (2.9%, with 68 off-archetype copies spread across Atlantean, Abyss-, Daedalus, Mulcharmy and others), the lack of a side deck, the absence of Abysstrite and Poseidra Abyss (both high-usage core cards), and no recorded combos to confirm a ceiling. Popularity and archetype usage were not counted as power.

Dimension scores

How the score was computed

Strategy profile: Midrange primary; Toolbox used for the interaction-heavy secondary read. Structural ≈ 57, Going First ≈ 60, Going Second ≈ 65, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist exposure (-6); no side deck (-4). Final formula: Illegal list: theoretical/structural only. Structural 57 and TR 45 give 0.80*57 + 0.20*45 = 54.6; modifiers of -10 bring it to about 44.6, which is capped to 30 because the deck is illegal (Meta provisional/null).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.95 · 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 hand-trap layer (14 cards) with strong going-second hand6 coverage
• High proxy probability of opening an archetype-core card
• Broad Link, Xyz and Synchro access from the Extra Deck
• Card-advantage text from Mulcharmy and searcher effects

Weaknesses

• Illegal: Ash Blossom & Joyous Spring run 3 copies against a limit of 2
• Very low exact-archetype purity (2.9%) with 68 off-archetype copies
• No side deck
• Core Extra Deck cards Abysstrite and Poseidra Abyss are absent
• No recorded combos to confirm the ceiling or median

Critical choke points

• Legality: the deck must drop one Ash Blossom before it can be played in OCG
• Starter reliance on Atlantean and Mermail searchers to reach the Link and Xyz boards

Recommended changes

Evidence & confidence

• Verified: Legality: Ash Blossom & Joyous Spring is 3 copies vs OCG Semi-Limited limit 2; Main 55, Extra 15, Side 0 within size rules; Card text for the 14 hand traps and the role-hint tags; Archetype purity 2.9%, 68 off-archetype copies
• Observed: Usage statistics: 60% of core cards are present
• Inferred: Starter-access estimate (about 0.95 proxy) and hand6 hand-trap estimate (about 0.84); Brick and conflict risk; Interaction density and going-second read; Resource and grind read from card text
• Provisional: Format fit and matchup coverage (no tournament data); Meta power (null, 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 are absent No win-rate telemetry for going-first/second, matchups or brick rates Meta Power is provisional unless a dated metagame sample is supplied No side deck supplied, so post-side plans cannot be evaluated