Kewl Tune Deck #770227 — Yu-Gi-Oh! OCG
55 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Mulcharmy Purulia x3, Ash Blossom & Joyous Spring x3. Created Oct 20, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 10/20/2026
Main Deck (55)
- Droll & Lock Bird x2
- Mulcharmy Fuwalos x3
- Mulcharmy Purulia x3
- Ash Blossom & Joyous Spring x3
- Effect Veiler x3
- Fydraulis Harmonia x3
- Ghost Belle & Haunted Mansion x3
- Kewl Tune Clip x1
- Kewl Tune Cue x3
- Kewl Tune Mix x2
- Kewl Tune Reco x3
- Kewl Tune Rotary x3
- Called by the Grave x1
- Crossout Designator x1
- Duelist Genesis x2
- Forbidden Droplet x3
- Harpie's Feather Duster x1
- JJ "Kewl Tune" x1
- Kewl Tune Synchro x3
- Lightning Storm x2
- Pot of Prosperity x1
- Synchro Overtake x1
- Triple Tactics Talent x1
- Infinite Impermanence x3
- Solemn Judgment x1
- Solemn Warning x2
Extra Deck (15)
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30± 8/ 100
Power Score
Structural
59
Reliability
48
Going First
56
Going Second
62
Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 58.7 |
| Going First | 56 |
| Going Second | 62 |
| Meta Power | provisional |
| Tournament Reliability | 48 |
- Primary strategy: Midrange
- Secondary strategies: Combo, Stun
- Format: ocg
Legality
Main 55 / Extra 15 / Side 0 — status: Illegal. 8 violation(s).
Identity & game plan
- Win condition: Synchro Summon of Kewl Tune Extra Deck monsters (Kewl Tune Loudness War, B2B, Track Maker, Remix) off Kewl Tune Tuner chains, with Kewl Tune Synchro and Reco/Mix searching the next Tuner; Chaos Angel, Zalen, Visas Amritara and Super Starslayer TY-PHON as non-Kewl-Tune Synchro/Xyz closers when the archetype line is blanked
- Turn 1 (going first): Normal Summon a Kewl Tune Tuner, search a Kewl Tune card, then Synchro Summon into a Kewl Tune boss while holding Ash Blossom and Effect Veiler for the opponent's first response
- Turn 2 (going second): Hold Infinite Impermanence, Ash Blossom, Effect Veiler, Ghost Belle and Droll to stop the opponent's starter, then rebuild the Kewl Tune line from the GY through Kewl Tune Reco/Mix recursion
- Recovery: Recycle Tuners from the GY through Kewl Tune Reco, Mix and Rotary searches and Kewl Tune Loudness War's GY effect, then rebuild a board from the deck's 16 searchers
- After siding: Not evaluable: the list has no side deck, so there is no post-side plan at all
Why it scores here
The structural read is that this Kewl Tune list is a Synchro-based midrange deck with real starter access: the 20-card archetype core gives an estimated 0.91 chance of at least one core card in the opening five (Inferred), and 16 searchers plus recursion keep the engine from stalling. Its interaction is dense, with 14 hand traps and 20 negation-text cards, so it can contest the opponent's first turn and recover through the GY. The score is held down by the brick and clutter load of 27 tech-flagged cards, the lack of side deck, and the absence of any recorded boards, so the floor and median are inferred from text only. The score does not come from Kewl Tune being a popular archetype, and it does not come from averaging card scores. The list is Illegal in OCG (three-copy Limited and Semi-Limited cards and two Forbidden spells), so the Final Contextual score is capped at 30 and the evaluation is theoretical/structural only.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 70 | Archetype core group P(>=1 in opening 5) = 0.91 across 20 copies; 3-copy starters at 0.25 each per card; starter access is good but over-copied (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 50 | 14 hand traps and 27 tech-flagged cards over 55 main slots; 9 singleton main cards add brick and dead-draw risk; no full-brick data (Inferred) |
| D3 | Combo Conversion & Ceiling | 58 | No parseable recorded boards; ceiling inferred from Synchro chains into Loudness War, B2B and Remix via text only (Inferred) |
| D4 | Combo Floor & Median Output | 45 | Median output unmeasured; floor relies on Kewl Tune searches reaching a Tuner and Extra Deck boss (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 60 | Ash, Impermanence, Effect Veiler, Ghost Belle, Droll and Solemn give several independent answers to disruption; GY recursion adds a second route (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 65 | 16 searcher-text cards and Kewl Tune Reco/Mix recursion support rebuilds; Pot of Prosperity adds card flow (Inferred) |
| D7 | End-Board & Interaction Quality | 72 | 20 negation-text and 24 removal-text cards across traps and quick effects; Lightning Storm and Harpie's Feather Duster add board wipes (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 68 | Going-second hand-trap P(>=1 in 6) = 0.84 for 14 hand traps, so the second-player board can be contested (Inferred) |
| D9 | Offensive Pressure & Closing Power | 62 | Kewl Tune Loudness War, B2B, Remix and Chaos Angel give high end-board ATK and piercing text (Verified card text, Inferred closing) |
| D10 | Main Deck Efficiency & Flexibility | 55 | 55 main with 9 singletons and 27 tech-flagged slots; compact only in the sense of a clear engine core (Inferred) |
| D11 | Extra Deck Efficiency & Coverage | 62 | 14 Synchro and 1 Xyz Extra Deck slots, all 12 distinct Extra cards used; several are mandatory bosses (Verified composition) |
| D12 | Side Deck Adaptability | 20 | Side deck is empty (0 cards) in an OCG list that is best-of-3, so no post-side adaptability exists (Verified) |
| D13 | Matchup Coverage & Format Fit | 50 | No dated metagame or tournament link; archetype share unavailable, so matchup fit is Provisional |
| D14 | Pilotability & Error Tolerance | 45 | Synchro chains with multiple Tuner-searches, quick-effect responses and Ash/Impermanence timing make this a demanding pilot (Inferred) |
How the score was computed
Strategy profile: Midrange. Structural ≈ 58.7, Going First ≈ 56, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 48. Modifiers: banlist_exposure (-8); no_side_deck (-4). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability = 56.6, plus modifiers -12 = 44.6, then capped at 30 because legality is Illegal (theoretical/structural only)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.91 · 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 16 searchers and several Tuner recursion routes
- 14 hand traps plus 20 negation-text cards give strong going-second interaction
- Extra Deck covers multiple Synchro bosses and an Xyz option
Weaknesses
- Illegal under OCG copy limits and Forbidden list
- 27 tech-flagged cards and 9 singletons raise brick and clutter risk
- No side deck, so there is no post-side adaptation
- Only 35.7% of cards are exact Kewl Tune; many slots depend on generic staples
Critical choke points
- Kewl Tune Synchro and Reco/Mix as the only Tuner-search routes into the boss
- Any single Synchro boss removed in the Main Phase before a second Synchro route exists
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Called by the Grave and Triple Tactics Talent | Legal OCG Limited-list replacements or a 1-of Kewl Tune staple | Both are Forbidden in OCG; the list cannot be legally played until they leave |
| 2 | Extra copies of Kewl Tune Cue, Rotary, Synchro and Reco beyond the legal limit of 1 each | Legal single copies of other Kewl Tune Tuners or a generic Tuner | Each is over the Limited copy cap; removing extras makes the list legal and reduces brick density |
| 3 | One tech card (for example Harpie's Feather Duster) | A 15-card side deck | A best-of-3 OCG list with no side deck has no post-side plan |
Evidence & confidence
- Verified: Legality: OCG Forbidden cards present and multiple cards over Limited/Semi-Limited copy limits (Illegal); Main 55 / Extra 15 / Side 0 within size rules; Card text and composition counts from evidence
- Inferred: Core group opening-hand probability 0.91 (Inferred); Hand-trap and searcher density as consistency and interaction proxies (Inferred); Floor, median and ceiling estimated from card text only (Inferred)
- Provisional: Meta power and matchup fit: no dated metagame or tournament data
- Data gaps: No combos supplied; combo floor/median/ceiling is text-only inference No tournament link; archetype meta-share and per-pilot record absent No win-rate telemetry; going-first/second splits and matchup outcomes unknown Meta power provisional; no dated metagame sample
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