Fiendsmith Deck #698372 — Yu-Gi-Oh! Master Duel
40 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Nibiru, the Primal Being x3, The Bystial Lubellion x3. Created May 6, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 05/06/2026
Main Deck (40)
- Bystial Baldrake x1
- Bystial Druiswurm x2
- Bystial Magnamhut x1
- Droll & Lock Bird x2
- Fabled Lurrie x1
- Fiendsmith Engraver x2
- Kashtira Fenrir x1
- Kashtira Unicorn x2
- Lacrima the Crimson Tears x1
- Maxx "C" x1
- Mulcharmy Fuwalos x3
- Nibiru, the Primal Being x3
- The Bystial Lubellion x3
- Ash Blossom & Joyous Spring x3
- Ghost Belle & Haunted Mansion x3
- Branded Regained x1
- Called by the Grave x1
- Fiendsmith's Tract x3
- Kashtira Birth x1
- Pressured Planet Wraitsoth x1
- Fiendsmith in Paradise x1
- Infinite Impermanence x3
Extra Deck (15)
- Fiendsmith's Desirae x1
- Fiendsmith's Lacrima x1
- Necroquip Princess x1
- A Bao A Qu, the Lightless Shadow x1
- Fiendsmith's Agnumday x1
- Fiendsmith's Requiem x1
- Fiendsmith's Sequence x1
- I:P Masquerena x1
- Moon of the Closed Heaven x1
- S:P Little Knight x1
- W:P Fancy Ball x1
- Baronne de Fleur x1
- Chaos Angel x1
- D/D/D Wave High King Caesar x1
- Super Starslayer TY-PHON - Sky Crisis x1
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 57 |
| Going First | 58 |
| Going Second | 63 |
| Meta Power | provisional |
| Tournament Reliability | 48 |
- Primary strategy: Control
- Secondary strategies: Midrange, Toolbox
- Format: master-duel
Legality
Main 40 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).
Identity & game plan
- Win condition: Fiendsmith Fusion/Link end-board (Fiendsmith's Desirae, Chaos Angel, Super Starslayer TY-PHON) converted after hand-trap and disruption exchanges; Bystial and Kashtira Level 6/7 beatsticks (Bystial Druiswurm, Bystial Baldrake, Kashtira Fenrir) as board follow-up
- Turn 1 (going first): Opening Fiendsmith's Tract and Fiendsmith Engraver to reach Lacrima/Requiem-style Link or Fusion pressure, with Maxx "C" and Droll & Lock Bird protecting the draw and search lines
- Turn 2 (going second): Hold Ash Blossom, Ghost Belle, Infinite Impermanence and Nibiru to stop the opponent's first summon, then rebuild through Engraver and Tract
- Recovery: Recursion via Fiendsmith Engraver and Lacrima the Crimson Tears from the GY, plus Branded Regained and Mulcharmy Fuwalos for card flow
- After siding: Not evaluable: the deck runs no Side Deck (Side Deck size 0), so there is no post-side plan
Why it scores here
The deck's starter access is reasonable: Fiendsmith's Tract (x3), Fiendsmith Engraver (x2) and the searcher text across 13 cards give an archetype-core probability of about 0.88 of at least one core card in a 5-card opening hand (Inferred). Its interaction density is high for a control shell, with Ash Blossom, Ghost Belle, Infinite Impermanence, Droll & Lock Bird and Maxx "C" as hand traps, backed by negation and removal on Extra Deck monsters such as Fiendsmith's Desirae, W:P Fancy Ball and D/D/D Wave High King Caesar. Offensive closing comes from high-ATK Extra Deck bosses (Chaos Angel 3500, Super Starslayer TY-PHON 2900, Desirae 2800). No combo boards were supplied, so combo ceiling and floor are text-only inferences and were scored conservatively. The score is not a card-by-card average, and the Illegal status caps the result: Called by the Grave is Forbidden and is run at one copy, so this is a theoretical, structural-only read. Archetype popularity and the guide's description of the list as a Fiendsmith Control build were not treated as evidence of strength.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 72 | P(>=1 archetype-core card in 5-card opening hand) ≈ 0.88; Fiendsmith's Tract x3 and Engraver x2 give a multi-route bootstrap (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 58 | 15 hand traps and 16 tech cards, plus conditional cards such as Maxx "C" and Nibiru, add dead-draw risk on some hands; copy histogram is 11 singletons (Inferred) |
| D3 | Combo Conversion & Ceiling | 55 | No parseable boards in combo data; ceiling inferred from card text on Extra Deck bosses and Engraver recursion (Inferred) |
| D4 | Combo Floor & Median Output | 45 | No combo supplied; median output is unknown and scored conservatively from text only (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 62 | Multiple hand traps and recursive Fiendsmith monsters in the GY give alternative lines after one disruption (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 58 | Draw cards (Maxx "C", Mulcharmy Fuwalos, Branded Regained) and GY recursion support grind; no resource signature supplied (Inferred) |
| D7 | End-Board & Interaction Quality | 70 | Negation and removal text on Desirae, W:P Fancy Ball, D/D/D Wave High King Caesar and Baronne-free hand traps; no combo data to confirm layering (Inferred semantic) |
| D8 | Going-Second & Board-Breaking Power | 66 | Going-second split not available; hand-trap density (P ≥1 hand trap in 6 cards ≈ 0.95) suggests strength when going second (Inferred) |
| D9 | Offensive Pressure & Closing Power | 62 | End-board ATK includes Chaos Angel 3500, Super Starslayer TY-PHON 2900, Desirae 2800; Caesar 2800 (Verified stats) |
| D10 | Main Deck Efficiency & Flexibility | 52 | 40 main-deck cards with 22 distinct names; exact-archetype purity is 21.8% and 43 off-archetype copies lower coherence (Verified composition) |
| D11 | Extra Deck Efficiency & Coverage | 60 | Extra Deck is 15 cards across Link, Fusion, Synchro and XYZ with several Fiendsmith bosses; some routes need specific materials (Inferred) |
| D12 | Side Deck Adaptability | 10 | No Side Deck at all (Side Deck size 0), so no post-side adaptation exists (Verified) |
| D13 | Matchup Coverage & Format Fit | 45 | No tournament link or meta-share data; format fit is provisional (Provisional) |
| D14 | Pilotability & Error Tolerance | 40 | Three archetypes and several link/fusion routes raise decision points and sequencing load (Inferred) |
How the score was computed
Strategy profile: Control primary, Midrange secondary (structural only; the deck is not evaluated on a combo basis). Structural ≈ 57, Going First ≈ 58, Going Second ≈ 63, Meta = provisional, Tournament Reliability ≈ 48. Modifiers: banlist exposure (-10). Final formula: Illegal deck: theoretical only. Normal formula would give 0.80*57 + 0.20*48 - 10 (banlist modifier) = 45; capped at 30 because the list contains a Forbidden card (Meta provisional)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.88 · key two-card combo ≈ — · full-brick estimate ≈ 0.12 (all Inferred)
- Combo output: best PowerIndex —, median —, board-per-starter —
- Turn order: 0 going-first lines vs 0 going-second lines
Strengths
- High starter access from the Tract/Engraver/searcher package
- Dense hand-trap and negation coverage for both going-first and going-second turns
- High-ATK Extra Deck bosses give closing power
Weaknesses
- Illegal list: Called by the Grave (Forbidden) is run at one copy
- No Side Deck, so no post-side adaptation
- Low exact-archetype purity (21.8%) and many off-archetype staples dilute the engine
- No combo or matchup data to confirm floor or median output
Critical choke points
- Fiendsmith Engraver and Tract as the main search/starter route
- Extra Deck summon materials for Fiendsmith bosses (Requiem, Lacrima, Desirae)
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Called by the Grave (1 copy, Forbidden) | A legal Main Deck tech or removal slot | Clears the only violation so the list is legal and can receive a normal Final Contextual score; the specific replacement card is not verified against this evidence |
| 2 | Off-archetype filler cards with conditional use (e.g. Nibiru, Mulcharmy Fuwalos) | A Side Deck of at least 1 card | Gives a post-side plan (D12 is 10 with no Side Deck); the specific side cards are not verified against this evidence |
Evidence & confidence
- Verified: Main 40, Extra 15, Side 0; within the master-duel size rules; Called by the Grave: 1 copy run, 0 legal copies (Forbidden) → illegal; Stats and types of Chaos Angel, Super Starslayer TY-PHON, Desirae and Caesar from the evidence pack; Exact-archetype purity 21.8%
- Inferred: Archetype-core starter access ≈ 0.88 from the hypergeometric estimate; Hand-trap density gives ≈ 0.95 for at least one hand trap in 6 cards; Control profile and the interaction and resilience reads
- Provisional: Meta Power and matchup fit (no dated meta sample or tournament link)
- Data gaps: no combos supplied: combo floor, median and ceiling are text-only inference no tournament link: archetype meta-share and per-pilot match record absent no win-rate telemetry for going-first, going-second, matchups or brick rate no Side Deck: no post-side evidence Meta Power is provisional without a dated metagame sample
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