Mermail Deck #765630 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

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

• Primary strategy: Midrange
• Secondary strategies: Toolbox, Stun
• Format: tcg

Legality

Main 55 / Extra 15 / Side 0 — status: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Atlantean/Mermail engine searches and recurs into Xyz, Synchro and Link boss monsters (Poseidra Abyss, Lancea, Trishula, Marincess Coral Anemone) for board pressure; Direct attacks from Atlantean Dragoons and Level 3 or lower Sea Serpent monsters
• Turn 1 (going first): Turn 1 Mermail or Atlantean searcher (Abyssteus, Abysspike, Neptabyss) into a 2-card Level 7 or Xyz bootstrap, with Ash Blossom and Droll-style hand traps held as protection
• Turn 2 (going second): Six-card hand with a hand trap (Ash Blossom, Ghost Ogre, Droll & Lock Bird) to answer the opponent's starter, then rebuild through Dragoons and Poseidra
• Recovery: Recursion from the GY through Mulcharmy draw effects, Atlantean Heavy Infantry and Mermail searchers, plus Xyz material transfer
• After siding: No side deck is run (0 side cards), so there is no post-side plan; the evaluation is structural only

Why it scores here

This is an illegal list: Ash Blossom & Joyous Spring and Dominus Impulse are each run three times against a Semi-Limited limit of two, so the score is a structural-only read capped low. Structurally the deck reliably opens an engine: the Atlantean/Mermail core is 30 Main Deck copies with about 98% (Inferred) chance of at least one in an opening five, and 15 searcher-text cards add redundant access. Hand traps and negation text (7 hand traps, 14 negation-text cards) give it a real interaction layer, but about 58% (Inferred) of going-second six-card hands contain one, which is not reliable. Combo ceiling and median output could not be measured because no combos were supplied, so those scores are text-only inference and carry low weight. The score does not come from averaging card scores, and popularity was not credited; there is no side deck and no tournament or meta data.

Dimension scores

How the score was computed

Strategy profile: Midrange primary (Structural only, illegal list). Structural ≈ 58, Going First ≈ 60, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: illegal copy limit cap (-26); banlist exposure (0). Final formula: Illegal list: structural-only. Uncapped 0.80*58 + 0.20*50 = 56; capped to 30 because copy-limit violations are present

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.98 · key two-card combo ≈ — · full-brick estimate ≈ 0.02 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Core engine is near-certain to appear in an opening hand (Inferred)
• Redundant searchers and multiple independent starters (Inferred)
• Broad hand-trap and negation coverage (Inferred)

Weaknesses

• Illegal copy counts on Ash Blossom and Dominus Impulse
• Low exact-name archetype purity (7.1%) with many off-archetype and generic cards
• No side deck, so no post-side plan
• No recorded combos to confirm ceiling or median

Critical choke points

• Hand-trap dependence on going second (≈ 0.58 for one of 7 hand traps)
• Extra Deck boss access requires specific Atlantean/Mermail Xyz or Synchro materials

Recommended changes

Evidence & confidence

• Verified: Legality: Ash Blossom & Joyous Spring and Dominus Impulse each run 3 copies vs 2 legal; 0 Side Deck cards; Main 55 and Extra 15 are within size rules; Archetype spread: Atlantean 13, Abyss- 6, Mulcharmy 6, Mermail 5
• Observed: Extra Deck breakdown: 8 Xyz, 4 Link, 3 Synchro
• Inferred: Core starter opening-hand probability ≈ 0.98 (hypergeometric); Going-second hand-trap availability ≈ 0.58; Negation and removal coverage from text reads
• Provisional: Meta Power and matchup fit: no dated meta sample or tournament link
• Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied no side deck present — post-side performance is unassessable