Kewl Tune Deck #756690 — Yu-Gi-Oh! TCG
55 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Mulcharmy Purulia x3, Ash Blossom & Joyous Spring x3. Created Sep 26, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 09/26/2026
Main Deck (55)
- Droll & Lock Bird x2
- Mulcharmy Fuwalos x3
- Mulcharmy Meowls x1
- Mulcharmy Purulia x3
- Ash Blossom & Joyous Spring x3
- Effect Veiler x3
- Fydraulis Harmonia x3
- Ghost Belle & Haunted Mansion x3
- Ghost Ogre & Snow Rabbit x2
- Jet Synchron x1
- Kewl Tune Clip x1
- Kewl Tune Cue x3
- Kewl Tune Mix x3
- Kewl Tune Reco x3
- Kewl Tune Rotary x3
- Starjunk Synchron x1
- Called by the Grave x1
- Harpie's Feather Duster x1
- JJ "Kewl Tune" x1
- Kewl Tune Synchro x3
- Lightning Storm x1
- Pot of Prosperity x1
- Pot of Sloth x1
- Synchro Overtake x1
- The Fallen & The Virtuous x3
- Mannadium Reframing x1
- Synchro Emergency x3
Extra Deck (15)
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20± 8/ 100
Power Score
Structural
52
Reliability
40
Going First
48
Going Second
45
Deck — Deck Power Evaluation
Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 52 |
| Going First | 48 |
| Going Second | 45 |
| Meta Power | provisional |
| Tournament Reliability | 40 |
- Primary strategy: Combo
- Secondary strategies: Toolbox
- Format: tcg
Legality
Main 55 / Extra 15 / Side 0 — status: Illegal. 6 violation(s).
Identity & game plan
- Win condition: Synchro Summon Kewl Tune Tuner boards (Kewl Tune RS, Kewl Tune B2B, Kewl Tune Loudness War) off a Tuner-dense opening; Ecclesia and the Dark Dragon / Albion the Branded Dragon as Extra Deck payoffs via the Branded and Ecclesia splash
- Turn 1 (going first): Normal Summon Kewl Tune Cue or Mix, search another Kewl Tune, and build a Synchro Summon; hand traps held for the opponent's first interaction
- Turn 2 (going second): Use Ash Blossom, Ghost Belle, Effect Veiler and Droll & Lock Bird to answer the opponent's first search or summon, then Synchro through the surviving Tuner
- Recovery: Rebuild from the GY using Kewl Tune Reco and Kewl Tune Mix searches plus Tuner recursion; Mulcharmy draw effects refill the hand
- After siding: No Side Deck is registered, so no post-side plan can be assessed
Why it scores here
The list is illegal as built: six cards exceed their copy limits, and Kewl Tune Rotary (Forbidden) is run three times, so the score is a theoretical, structural-only read and is capped low. Structurally, the Kewl Tune Tuner web is consistent: 25 exact-name archetype copies and a 95.9% hypergeometric chance of at least one core card in a 5-card opening hand give the engine a real chance to go live on turns 1 and 2. Interaction is dense, with 13 hand traps and 15 negation-text cards, which keeps the engine alive through early disruption. Conversion and median output cannot be measured because the deck has no recorded boards, so both are text-only inferences. The score comes from consistency, interaction and system structure, not from the archetype's popularity, and not from averaging the individual card scores.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 58 | P(at least one 3-copy starter in 5-card hand) = 0.25 per card; core archetype group P = 0.959; 2-card bootstrap via Tuner searches (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 45 | Many Tuner-only hands and 16 searcher-text cards suggest redundancy, but 13 Tuner/hand-trap dead cards in some hands lower the score (Inferred) |
| D3 | Combo Conversion & Ceiling | 55 | best_line unavailable; ceiling inferred from Synchro chain of Kewl Tune Reco, Mix and B2B-tier Extra Deck monsters (Inferred) |
| D4 | Combo Floor & Median Output | 45 | median_power_index unavailable; no combos supplied, so floor is text-only (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 60 | Starter diversity from Kewl Tune Cue, Mix, Reco, Clip, Rotary plus 13 hand traps gives multiple independent lines (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 50 | Searchers and Pot of Prosperity recover cards, but no resource signature exists (Inferred) |
| D7 | End-Board & Interaction Quality | 62 | 13 hand traps and 15 negation-text cards give broad, layered interaction; Kewl Tune Loudness War protects Tuners (Inferred semantic) |
| D8 | Going-Second & Board-Breaking Power | 45 | Going-second split unavailable; hand traps are strong on the second turn, but no board-breaker density is recorded (Inferred) |
| D9 | Offensive Pressure & Closing Power | 40 | Extra Deck boards reach 2500 to 3200 ATK, but the win rate is unmeasured; closing power is inferred from Kewl Tune B2B and Stardust-tier attackers (Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 55 | 55 main-deck cards with 27 distinct; compact-to-medium spread within the 40-60 rule (Verified size, Inferred coherence) |
| D11 | Extra Deck Efficiency & Coverage | 50 | 14 Synchro and 1 Fusion in the Extra Deck, full at 15; Kewl Tune coverage is good but the mix is heavy (Verified count, Inferred) |
| D12 | Side Deck Adaptability | 20 | No side deck is registered, so no post-side adaptability can be read (Provisional) |
| D13 | Matchup Coverage & Format Fit | 40 | No tournament link or dated meta sample exists; archetype-level fit is provisional (Provisional) |
| D14 | Pilotability & Error Tolerance | 45 | Chained Synchro summons, Tuner-tracking and multi-option effects make the deck demanding to pilot (Inferred) |
How the score was computed
Strategy profile: Combo. Structural ≈ 52, Going First ≈ 48, Going Second ≈ 45, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: Illegal copy-limit and banlist exposure (-12); No side deck (0). Final formula: Illegal deck: theoretical Structural 52 with Combo weights; 0.80*Structural + 0.20*TournamentReliability = 49.6 before the illegal-deck cap; capped to 20 (Meta provisional)
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 Kewl Tune Tuner web with 25 exact-name copies and a 95.9% chance of a core card in the opening hand
- Layered interaction: 13 hand traps and 15 negation-text cards
- Extra Deck covers multiple Synchro boards at 2500 to 3200 ATK
Weaknesses
- Illegal as built: six copy-limit violations and Kewl Tune Rotary (Forbidden) run three times
- No side deck registered, so no post-side plan
- Missing 14 of 25 archetype core cards (for example Kewl Tune Playlist, Track Maker, Remix and RS are absent)
Critical choke points
- Kewl Tune Cue and Kewl Tune Reco are the main Tuner searchers; each is over its legal limit of one copy
- A single hand-trap-based stop on the first Synchro summon ends the turn
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Kewl Tune Rotary (3 copies) | Legal Kewl Tune Tuner or searcher (for example Kewl Tune Track Maker or Kewl Tune Playlist) | Forbidden card; the deck cannot be legally entered |
| 2 | Extra copies of Kewl Tune Cue, Kewl Tune Synchro, Kewl Tune Reco and Ash Blossom beyond their legal limits | Single copies of the Limited cards, two copies of the Semi-Limited cards, plus additional Tuner bodies | Bring every card within its copy limit so the list is legal |
| 3 | Nothing (Side Deck empty) | Side Deck with Harpie's Feather Duster-style backrow answers and Lightning Storm-style boards answers | Gives a post-side plan and recovers the D12 score |
Evidence & confidence
- Verified: Main 55, Extra 15, Side 0; legality status Illegal; Six copy-limit violations; Kewl Tune Rotary Forbidden with three copies; Hypergeometric starter probabilities from the resolved list
- Observed: Archetype core coverage 11 of 25 present (44%)
- Inferred: Engine consistency from the Tuner web and hand-trap density; Interaction quality from negation and hand-trap text; Going-second competitiveness from hand-trap probability
- Provisional: Meta Power and matchup fit (no dated meta sample); Side deck adaptability (no side deck)
- Data gaps: Deck list is illegal as built (copy limits and a Forbidden card), so structure is theoretical only No combos supplied; combo floor, median and ceiling are text-only inference No tournament link; archetype meta-share and per-pilot record are absent No Side Deck entries No win-rate telemetry; going-first/second and matchup rates are unknown Meta Power is provisional without a dated metagame sample
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