Fiendsmith Deck #730653 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 66/100 (±6 · Confidence: Medium)

• Primary strategy: Control
• Secondary strategies: Midrange, Toolbox, Grind
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Resource advantage via hand trap denial and grindy late-game positioning; Mid-speed combo into 2–3 negate boards if unopposed
• Turn 1 (going first): Establish Evil★Twin Ki-sikil/Lil-la dual-negate setup with hand trap backup and GY recovery stack
• Turn 2 (going second): Draw for hand traps (90% probability), break opponent board via removal suite, establish grind-position with recursion loops
• Recovery: GY recursion chain: Engraver/Lacrima fetch → Evil★Twin re-summon via link monsters → Mulcharmy conditional draw on opponent summoning; LP gain stalling from Ki-sikil attacks
• After siding: No side deck provided; post-side strategy unknown

Why it scores here

This Fiendsmith control deck scores 66 via strong going-second positioning (90% hand trap opening probability, tight removal suite) and robust grind mechanics (GY recursion, LP gain stalling, resource loops), but loses ground on offensive closing power (48—lacks direct damage synergy), missing critical archetype core pieces (Requiem, Sequence, Lacrima at 100% meta inclusion), and incomplete extra-deck synergy. The live Evil★Twin/Ki-sikil/Lil-la engine is reliable (consistency 75) and resilient to one disruption (72), producing consistent 2–3 negate boards in the median case, but the deviation from standard Fiendsmith construction (52.9% core inclusion) and lack of combo evidence (no parsed boards) prevent higher confidence. The deck excels as a control grind-out in a combo-heavy format, but tournament adaptability is unknown (no side deck) and rushing decks or surprise meta shifts would challenge its mid-tier closing speed.

Dimension scores

How the score was computed

Strategy profile: Control. Structural ≈ 72, Going First ≈ 71, Going Second ≈ 66, Meta = provisional, Tournament Reliability ≈ 64. Modifiers: Missing core Fiendsmith pieces (-3); Extra deck integration conflict (-2); No side deck (-2); Strong going-second hand trap density (2); Tight Live☆Twin engine (1). Final formula: 0.80*Structural(72) + 0.20*TournamentReliability(64) + modifiers(-4) = 66 (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.94 · key two-card combo ≈ — · full-brick estimate ≈ 0.05 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Excellent going-second hand trap density (90% opening probability) with 12 copies effective vs combo-heavy meta
• Strong resource recovery and grind mechanics: multiple GY recursion pieces, LP gain stalling from Ki-sikil, Mulcharmy conditional draws
• Redundant Evil★Twin engine: Ki-sikil/Lil-la dual-negate setup with built-in draw triggers and re-summon loops enable resilience to one disruption
• Flexible removal suite: Called by the Grave, Crossout Designator, Fiendsmith in Paradise cover multiple removal angles
• Tight main deck packing: 40 cards with clear role allocation, high consistency opening, minimal true garnets

Weaknesses

• Missing 3 critical Fiendsmith core pieces: Requiem (100% meta), Sequence (100% meta), Lacrima (100% meta) severely limit optimal combo lines
• Limited offensive closing power: control-focused execution means slow game clocks (8–12 turns to close), vulnerable to rush/OTK decks
• Conditional effects create brick scenarios: Nibiru (needs 5+ summons), Mulcharmy (needs empty field), Lil-la Sweet (needs opponent response) conflict with T1 board building
• Underutilized extra deck: A Bao A Qu, Moon of the Closed Heaven, Fiendsmith's Desirae hard to assemble without Requiem/Sequence in main
• No side deck: tournament adaptability completely unknown; best-of-3 performance unassessable

Critical choke points

• Fiendsmith's Tract negation: if the key searcher is countered, Fiendsmith engine stalls and deck forced into pure Live☆Twin/hand-trap backup
• Hand trap drought opening: if opening 5 contains multiple Ash/Droll/Veilers without live interaction, T1 board lacks negate density
• Evil★Twin setup dependency: if Ki-sikil is negated before summoning Lil-la, dual-engine synergy breaks and GY recursion delayed
• Extra deck mismatch: A Bao A Qu, Moon require specific summon routes not cleanly enabled by current main deck
• Going-first fragility: T1 board is solid (2–3 negations) but not exceptional; disrupting Tract/Ki-sikil early leaves low-interaction board

Recommended changes

Evidence & confidence

• Verified: Deck is Legal in Master Duel format (size rules met, copy limits respected); Card text roles verified from card database (hand traps, starters, removals); Composition: 40 main, 15 extra, 22 distinct main cards, type/attribute/race distributions; Banlist status: all restricted cards within legal copies (Called by the Grave Limited ×1, Crossout Limited ×1, Droll Semi-Limited ×2, Maxx C Semi-Limited ×1)
• Observed: Hand trap opening probability 90.18% for ≥1 in hand 6 (going second) from hypergeometric calculation; Archetype core card inclusion 9/17 present (52.9%) from YGOVN usage statistics; Role tag counts: 12 hand traps, 14 tech cards, 11 negation-text, 10 removal-text cards
• Inferred: D1 Engine Consistency (75): from P(core ≥1)=0.9354 + 7 three-copy starters, but missing 100% meta core; D2 Hand Quality (62): from conditional effects estimate ~15–20% brick rate; D3 Combo Ceiling (58): from card text; Tract + Evil★Twin produces 2–3 negations not explosive; D4 Median Output (64): from guide 'turn 1 disrupt, turn 2 break board' suggests mid-tier boards; D5 Resilience (72): from 6 distinct starters + strong GY recovery enabling 2+ lines after disruption; D6 Grind Power (70): from multiple draw triggers, recursion, LP gain enabling resource loops; D7 Interaction Quality (68): from dual Evil★Twin negate setup + Agnumday durability + removal coverage; D8 Going-Second (70): from 90% hand trap + removal enabling 60% board-break success rate; D9 Closing Power (48): from control archetype and missing bosses (Desirae, A Bao A Qu conditional); D10 Main Deck Efficiency (71): from 40 cards with 7 three-copy starters, clear roles; D11 Extra Deck (54): from 15 slots present but underutilized without Requiem/Sequence; D13 Matchup Fit (62): from Fiendsmith known but 52.9% core purity = non-standard build; D14 Pilotability (66): from 6–8 decision points per turn, ~70% pilot skill threshold
• Provisional: Meta Power (null): Fiendsmith known but this build deviates; no dated metagame sample; D12 Side Deck (40): no side deck provided; best-of-3 strategy unknown; Tournament Context (null): no tournament link or archetype meta-share for specific date
• Data gaps: No combos supplied: cannot verify ceiling/median from real boards; all combo scoring is card-text-inferred No tournament link: archetype meta-share and per-pilot match record absent No win-rate telemetry: going-first/going-second win rates, brick rates, per-matchup performance absent No side deck: best-of-3 strategy and tournament adaptability completely unknown Deviation from meta core: unclear if this 52.9% core-purity build is a known variant or experimental deviation