Fiendsmith Deck #770591 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)

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

Legality

Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 6 violation(s).

Identity & game plan

• Win condition: Fiendsmith Fusion/Link boards (Lacrima, Desirae, Requiem, Agnumday) built from Fiendsmith Engraver and Lacrima-style starters; the list is not a clean Fiendsmith shell; Live Twin / Evil Twin Link pressure (Evil Twin Ki-sikil, Evil Twin Lil-la, Evil Twin Ki-sikil Deal) and Luce the Dusk's Dark
• Turn 1 (going first): Open on a Live Twin starter (Ki-sikil or Lil-la), search with Secret Password or Sunny's Snitch, then reach a Link or Fusion line; the going-first path is thin because only about 25% of hands contain any given 3-of starter
• Turn 2 (going second): Use the hand traps (Ash, Infinite Impermanence, Nibiru, Effect Veiler, Ghost Belle, Ghost Ogre, Droll) to disrupt the opponent's first board, then rebuild through Fiendsmith or Twin searchers; this is the stronger side of the list
• Recovery: Rebuild through Fiendsmith's Tract, Buio the Dawn's Light, Fiendsmith Engraver recursion and the Live Twin searchers, but the copy-limit violations and Forbidden cards mean this rebuild cannot be played as-is
• After siding: Not evaluable: the deck has 0 side deck cards, so there is no post-side plan

Why it scores here

The deck is illegal in TCG as built: three Ash Blossom, two Fiendsmith Engraver, two Droll and Lock Bird exceed their limits, and Called by the Grave, Triple Tactics Talent and D/D/D Wave High King Caesar are Forbidden. The score therefore reflects the structural read only, capped at 20. The list is a split build: archetype purity is 12.9% (9 exact Fiendsmith copies against 61 off-archetype copies) across Live Twin, Evil Twin, Lil-la, Solemn, Cyclone, D.D., Harpie and From the Underworld, so the engines compete for the same hand slots. Its strength is interaction density (21 negation cards, 19 hand-trap-tagged cards) and a strong going-second hand (about 93% chance of at least one hand trap in six cards), which earn points on D7 and D8. Opening-hand conversion is weak: any single 3-copy starter appears in about 25% of five-card hands, and the Fiendsmith core is 1 copy in the list against a usage profile that runs it in every standard build, which costs points on D1 and D2. No combo, tournament or win-rate data exists, so popularity did not earn points, no card scores were averaged, and the Meta score is provisional and null.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 47, Going First ≈ 42, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 35. Modifiers: banlist exposure (-8); no side deck (-4). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) = 44.6; modifiers -12 give 32.6; Illegal-deck cap applied: final = min(score, 20)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.25 · 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 negation and hand-trap package gives strong going-second interaction
• Fiendsmith and Twin searchers provide several ways to find starters
• High-end Link and Fusion finishers (Desirae, Lacrima, Underworld Goddess) give closing power if the line is legal

Weaknesses

• Illegal in TCG: copy-limit and Forbidden violations
• Archetype purity 12.9% means the engines compete for slots
• Low starter density: no single 3-copy starter is live in more than about 25% of 5-card hands
• No sideboard

Critical choke points

• Fiendsmith Engraver (1-copy legal limit, runs 2) is the core searcher and recursion source for the Fiendsmith line
• Live Twin starters are the only going-first route, and the 25% per-card chance makes the opening unreliable

Recommended changes

Evidence & confidence

• Verified: Legality status Illegal with 6 listed violations; Main 55 / Extra 15 / Side 0 counts; Archetype purity 12.9%; Banlist status of each violating card
• Inferred: Starter and hand-trap draw probabilities from hypergeometric estimates; Dimension scores D1-D12 and D14; Going-first versus going-second split
• Provisional: Meta Power (null); D13 matchup and format fit
• Data gaps: no combos supplied: combo floor, median and ceiling are text-only inference no tournament link: archetype meta-share and per-pilot record absent no win-rate telemetry: going-first/second, matchup and brick rates are Inferred or Unknown Meta Power is provisional unless a dated metagame sample is supplied no side deck: post-side adaptability cannot be scored