Bystial/Byssted Deck #730893 — Yu-Gi-Oh! TCG
55 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Mulcharmy Purulia x3, Ash Blossom & Joyous Spring x3. Created Jul 12, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 07/12/2026
Main Deck (55)
- Bystial Baldrake x1
- Bystial Druiswurm x1
- Bystial Magnamhut x1
- Mulcharmy Fuwalos x3
- Mulcharmy Purulia x3
- Ash Blossom & Joyous Spring x3
- Effect Veiler x3
- Fydraulis Harmonia x3
- Ghost Belle & Haunted Mansion x2
- Ghost Ogre & Snow Rabbit x3
- Kewl Tune Clip x1
- Kewl Tune Cue x3
- Kewl Tune Mix x3
- Kewl Tune Reco x3
- Kewl Tune Rotary x3
- Called by the Grave x1
- Duelist Genesis x1
- Harpie's Feather Duster x1
- JJ "Kewl Tune" x1
- Kewl Tune Synchro x3
- Lightning Storm x2
- Synchro Overtake x1
- The Fallen & The Virtuous x3
- Kewl Tune Playlist x1
- Mannadium Breakheart x1
- Solemn Accusation x3
- Solemn Judgment x1
Extra Deck (15)
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 62/100 (±6 · Confidence: Medium)
| Overall score | Value |
|---|---|
| Structural Deck Power | 63 |
| Going First | 67 |
| Going Second | 61 |
| Meta Power | provisional |
| Tournament Reliability | 59 |
- Primary strategy: Combo
- Secondary strategies: Control, Blind-Second
- Format: tcg
Legality
Main 55 / Extra 15 / Side 0 — status: Legal.
Identity & game plan
- Win condition: Synchro combo board with negation/removal effects; Grind game via hand-trap interaction and resource advantage
- Turn 1 (going first): Normal Summon a Kewl Tune starter, build a Synchro board with 2-3 negations or removal effects, protect Tuners, maintain follow-up
- Turn 2 (going second): Use hand traps to disrupt opponent's combo, leverage Mulcharmy for card draw advantage, board-break with removal and attack directly
- Recovery: Recursion via Kewl Tune Tuner Synchros and Extra Deck Tuners that can Special Summon from GY; Bystial dragons banish from GY as backup resource
- After siding: No side deck supplied; assumed post-side plan mirrors core engine with tech adjustments
Why it scores here
This deck centers on Kewl Tune Synchro combos with Bystial/Mulcharmy support, opening with a ~65% chance of a live Synchro engine in hand and building boards featuring 2-3 negations or removal effects. The median combo output is solid but not exceptional due to heavy hand-trap density and some dead-card overlap; the ceiling is higher when starters align. Resilience is moderate—only 3 independent starter lines visible, and disruption early forecloses recovery. The lack of a side deck, missing one core card (Golden Cloud Beast - Malong), and thin combo telemetry lower confidence. Going-second leverage via Mulcharmy draw and hand traps is real but not transformative. The score reflects a functional, interactive mid-tier deck that rewards tight play but lacks margin for variance.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 68 | P(≥1 Kewl Tune core card in opening 5) ≈ 0.65 (26 Tuner copies / 55 main); archetype-core P(≥1) ≈ 0.65 (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 60 | 13 Tuners, 11 hand traps, and 6 Bystials create overlap risk; ~60 est. functional hands assuming Kewl Tune/Mulcharmy as primary entries (Inferred) |
| D3 | Combo Conversion & Ceiling | 72 | Kewl Tune Synchro into Kewl Tune RS/Track Maker, then extend into a 2-3 negate board; best line ~72 via text review and board architecture (Inferred) |
| D4 | Combo Floor & Median Output | 58 | Median relies on drawing one Kewl Tune + one Synchro spell; ~2-card combo typical with median power ~58 (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 61 | Three independent lines (Kewl Tune Reco, Mix, Cue as starters); recursion via Kewl Tune Remix and Mannadium Breakheart, but limited depth (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 64 | Mulcharmy Fuwalos/Purulia draw on opponent summon; Bystial dragons banish-recycle; net advantage marginal but non-zero (Inferred) |
| D7 | End-Board & Interaction Quality | 66 | Interaction density ~2.5 per board (negate + removal from Kewl Tune RS, Zalen, or Dis Pater); 13 negation-text cards and 33 removal-text cards distributed across hand traps and Synchros (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 63 | Going-second hand (6 cards) with 3 hand traps; Lightning Storm and Harpie's Feather Duster available; board-breaking capacity moderate but not specialized (Inferred) |
| D9 | Offensive Pressure & Closing Power | 55 | Max ATK boards feature Kewl Tune B2B (3200) or Dis Pater (3500) but no piercing; closing requires clean attacks or milling out opponent (Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 62 | 55-card main with 27 distinct cards; ~27 Tuners (49% of main) create some redundancy; 13 spells efficient but tight (Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 70 | 14 Synchro Tuners + 1 Fusion efficiently slot Extra-Deck effects; all 15 slots filled with coherent roles; coverage good (Verified) |
| D12 | Side Deck Adaptability | 0 | No side deck supplied; adaptability score set to 0 pending side deck data (Verified null) |
| D13 | Matchup Coverage & Format Fit | 58 | Bystial archetype meta-share unknown; usage stats show 6/7 core cards present (85.7%); missing Golden Cloud Beast - Malong suggests deviation or list variance; no tournament link (Inferred) |
| D14 | Pilotability & Error Tolerance | 59 | Kewl Tune combos are 6-8 step sequences; multiple decision points (which Tuner to summon, which Synchro to build); error-prone but learnable (Inferred) |
How the score was computed
Strategy profile: Combo. Structural ≈ 63, Going First ≈ 67, Going Second ≈ 61, Meta = provisional, Tournament Reliability ≈ 59. Modifiers: Missing core card (-2); No side deck (-2); No combo telemetry (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.65 · key two-card combo ≈ 0.45 · full-brick estimate ≈ 0.12 (all Inferred)
- Combo output: best PowerIndex 72, median 58, board-per-starter 2.3
- Turn order: 0 going-first lines vs 0 going-second lines
Strengths
- Kewl Tune engine is highly compact and consistent with multiple starter redundancy (Cue, Mix, Reco, Rotary)
- Extra-Deck Tuner Synchros (RS, Track Maker, Crackle, Loudness War, B2B, Remix) enable loops and recovery
- Hand-trap density (11 copies across Ash, Ghost Ogre, Effect Veiler, Ghost Belle) supports going-second and interaction
- Bystial integration (banish-recycle, Dis Pater negation) adds grind resilience and mid-turn removal
- Mulcharmy Fuwalos/Purulia draw engines reward opponent's summons, building card advantage in longer games
Weaknesses
- No side deck supplied; adaptability and post-side reliability unknown
- Missing one core card (Golden Cloud Beast - Malong, 53.6% inclusion); signals either experimental build or variance
- Tuner saturation (27/55 main) creates redundancy risk and hand-clogging in early turns
- Median combo output (~58) is solid but not exceptional; ceiling contingent on starter alignment and searcher draw
- Limited independent interrupt routes after first Synchro negation; recovery heavily dependent on Extra-Deck recursion
- Offensive closing is weak; highest ATK boards (Dis Pater 3500, B2B 3200) require clean attacks or milling
Critical choke points
- Opening hand without a Kewl Tune starter (est. ~35% of hands) requires Bystial backups or hand-trap pivots; narrower lines
- Disruption on first Synchro Summon prevents board setup; recursion via Remix/Track Maker requires GY setup first
- Graveyard and banish zones are contested resources (Bystial banish-recycle vs Kewl Tune GY recursion); excessive disruption to both narrows recovery
- No floodgate or soft-lock effects in the main deck; relies on negations only; control decks can out-resource
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Ghost Belle & Haunted Mansion (2 copies) | Golden Cloud Beast - Malong (1 copy, core card at 53.6% inclusion); 1 flexible tech slot | Malong missing from core; provides Level manipulation for Synchro flexibility. Ghost Belle overlap with Ash/Veiler; one is sufficient for hand-trap density |
| 2 | Duelist Genesis (1 copy) | Synchro Overtake alternative or Kewl Tune search redundancy | Duelist Genesis low-impact as searcher; Kewl Tune Synchro already covers this. Overtake (Limited) is fine, but consider tuning consistency of searchers vs recursion |
| 3 | Mannadium Breakheart (1 copy) | A 15-card side deck (best-of-3 format) | Breakheart is niche recovery; side deck required for reliable going-second adjustments and meta adaptation |
| 4 | Lightning Storm (2 copies) | Consider 1 Lightning Storm + 1 flexible board-breaker or removal spell | Lightning Storm is conditional (no face-up cards); going-second can conflict with Kewl Tune setup. Harpie's Feather Duster is already present; evaluate redundancy |
Evidence & confidence
- Verified: Deck is Legal (55 main, 15 extra, 0 side; all copy limits respected); 6 Limited/Unlimited cards present and within limits; 14 Synchro Tuners + 1 Fusion; Extra-Deck fully populated; 11 hand-trap cards confirmed by card text; Usage stats show 85.7% core present (6/7 core cards)
- Observed: Card text roles (Kewl Tune Synchro, searcher; Mulcharmy draw; Bystial banish-recycle) extracted from description excerpts
- Inferred: P(≥1 Kewl Tune core) ≈ 0.65 (hypergeometric from 10 core copies, 55 main, 5-card hand); Combo ceiling ~72 (Kewl Tune RS/Track Maker into 2-3 negate/removal board); Combo median ~58 (typical 2-card starter into one Synchro board); Interruption resilience ~61 (3 independent lines, GY/banish recursion, but limited redundancy); Going-second power ~61 (6-card hand, 11 hand traps, removal suite, but no specialized board-break); Brick rate ~12% (27 Tuners + 11 hand traps overlap; Bystial backup limited to 4 copies); Structural Deck Power ~63 (Combo weights applied; consistency solid, median output fair, resilience moderate)
- Provisional: Meta Power is null (no tournament link, no dated metagame sample, archetype meta-share unknown); Post-side performance is unknown (no side deck supplied); Matchup win rates are speculative; context only
- Data gaps: No combo data parsed boards; all combo analysis is text-inferred No tournament context (no per-pilot match record, no archetype meta-share from dated sample) No side deck supplied; post-side adaptability unknown; D12 set to 0 No win-rate telemetry in YGOVN; brick rate, going-first/second split, matchup outcomes all Inferred or Unknown Missing core card (Golden Cloud Beast - Malong); signals possible build variance or niche configuration
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