Mermail Deck #766837 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Combo, Control
• Format: tcg

Legality

Main 44 / Extra 15 / Side 0 — status: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Atlantis/Atlantean recursion into Xyz, Link and Synchro boards (Poseidra Abyss, Azure Ocean Dragon Lord - Neo-Daedalus Rage, Abysstrite, Levia-Dragoon) with Umi-name effects and mass Special Summons from the GY; Abyss- and Daedalus Link/Xyz boards built from Abyssrhine and Atlantean Dragoons searches
• Turn 1 (going first): Open a WATER starter such as Neptabyss, Abyssrhine or Siren Vortex, search an Atlantis/Umi Spell or Field card, and build toward a Link or Xyz board; Atlantis-named cards and Ash Blossom protect the turn
• Turn 2 (going second): Use Ash Blossom and Called by the Grave (illegal here) to answer the opponent's first engine, then rebuild through GY recursion; hand-trap density is only 3 copies of one card, so this plan is thin
• Recovery: Recur Atlantean and Atlantis monsters from the GY (Warchief, Monster Arms, Abyssrhine, Atlantean Dragoons) and reuse Advent of Atlantis and Fish Sonar to refill the hand
• After siding: No Side Deck is registered (side_count 0); no post-side plan can be evaluated

Why it scores here

The deck's Atlantis, Atlantean and Umi core is dense: the 17-copy archetype core has P(at least one in opening 5) of about 0.93, and 26 searcher-text cards give near-certain access to a starter over a few draws (Inferred). Recursion through the GY (Warchief, Monster Arms, Abyssrhine, Atlantean Dragoons) gives it a plausible second-turn route to Link and Xyz boards. Interaction is light: three Ash Blossom copies, Called by the Grave and One for One, with Forbidden and copy-limit breaches on two of them, so the illegal list cannot receive a normal Final score. Popularity of the Mermail/Atlantean family was not credited, no tournament or win-rate data exists, and card scores were not averaged; the score comes from the system's access, recursion and interaction profile, and is capped low because the list is illegal in TCG.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 47, Going First ≈ 45, Going Second ≈ 38, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: banlist exposure: Called by the Grave (-6); copy-limit breach: Ash Blossom & Joyous Spring (-6). Final formula: 0.80*Structural(47) + 0.20*TournamentReliability(40) = 45.6; modifiers -12 gives 33.6; Illegal-list cap applied, score 30. Meta Power provisional (null).

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.93 · 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 archetype core with near-certain starter access (about 0.93 in opening 5)
• Strong Xyz and Link closers (Poseidra Abyss 3000 ATK, Azure Ocean Dragon Lord 2900 ATK, Abyssgaios 2800 ATK)
• Redundant GY recursion through several Atlantean monsters

Weaknesses

• Illegal as built: Called by the Grave is Forbidden and Ash Blossom is over its Semi-Limited limit
• Thin interaction: only three hand traps and a single One for One
• No Side Deck, so no post-side plan
• Several Atlantis and Umi cards are narrow, lowering draw quality

Critical choke points

• Single WATER starter lines that depend on Atlantis/Umi being on the field before GY effects can fire
• Illegal copy counts would force Ash Blossom and Called by the Grave out, removing two of the three interaction sources

Recommended changes

Evidence & confidence

• Verified: Legality: Called by the Grave is Forbidden (0 legal copies); Ash Blossom is Semi-Limited (2 legal copies, 3 run); Main deck 44 and Extra 15 are within the TCG size rules; Side 0 is within 0-15; Archetype core probability 0.9257 for 17 copies in opening 5
• Inferred: Starter reliability and recursion route quality from card text and hypergeometric estimates; Interaction density and hand-trap coverage from text role hints; Closing power from printed ATK values of the Extra Deck boss monsters
• Provisional: Meta Power and matchup fit: no dated metagame sample or tournament data supplied
• Data gaps: No combos supplied, so combo floor, median and ceiling are text-only inference No tournament link, so archetype meta-share and per-pilot match record are absent No win-rate telemetry exists in YGOVN (going-first/second, matchup, brick and starter rates) Meta Power is Provisional unless a dated metagame sample is supplied No Side Deck registered (side_count 0)