Synchron Deck #752154 — Yu-Gi-Oh! TCG
55 Main, 15 Extra, incl. Mulcharmy Fuwalos x3, Ash Blossom & Joyous Spring x3, Effect Veiler x3. Created Sep 20, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 09/20/2026
Main Deck (55)
- Droll & Lock Bird x2
- Mulcharmy Fuwalos x3
- Mulcharmy Purulia x2
- Ash Blossom & Joyous Spring x3
- Effect Veiler x3
- Fydraulis Harmonia x3
- Ghost Belle & Haunted Mansion x3
- Ghost Ogre & Snow Rabbit x1
- 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 x1
- Over Tuning x1
- Pot of Desires x2
- Pot of Sloth x2
- Synchro Overtake x1
- Triple Tactics Talent x1
- Dominus Purge x3
- Infinite Impermanence x3
- Mannadium Reframing x1
Extra Deck (15)
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 20/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 48 |
| Going First | 45 |
| Going Second | 55 |
| Meta Power | provisional |
| Tournament Reliability | 35 |
- Primary strategy: Combo
- Secondary strategies: Toolbox, Stun
- Format: tcg
Legality
Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 8 violation(s).
Identity & game plan
- Win condition: Synchro Summon a large Kewl Tune or Synchro boss (Kewl Tune B2B, Kewl Tune Loudness War, Super Starslayer TY-PHON) from a Tuner-heavy hand and board.; Greed draw engine (Pot of Desires, Pot of Sloth) with Mulcharmy draw triggers to overwhelm the opponent's hand.
- Turn 1 (going first): Open with a Tuner, Normal Summon, and use Kewl Tune searchers to reach a Synchro boss; expect the 3-copy Kewl Tune core to be unavailable in a legal build.
- Turn 2 (going second): Hold Ash Blossom, Effect Veiler, Infinite Impermanence, and Droll & Lock Bird to stop the opponent's first engine, then Synchro through the resulting board.
- Recovery: Recover with Kewl Tune Reco and Kewl Tune Rotary from the GY, Duelist Genesis and Synchro Overtake for searches, and Mulcharmy draw effects.
- After siding: No Side Deck is registered (0 cards), so there is no post-side plan.
Why it scores here
This list is Illegal in TCG: Called by the Grave, Kewl Tune Rotary and Triple Tactics Talent are Forbidden, and Ash Blossom, Droll & Lock Bird and three Kewl Tune cards exceed their Limited or Semi-Limited copy limits. Under the rubric, that caps the Final score at 20 and makes this a structural-only read. The deck does have real interaction density (15 hand traps, 17 negation texts) and a Synchro boss suite, which is why Going-Second Power scores above Going-First. The structural score of about 48 comes from the system: the Kewl Tune engine is strong on paper, but its 3-copy core cannot survive a legal build, and 26 Tuners plus 22 Level 0 spells make the main deck inefficient. No combos, guides, tournament data or side deck were supplied, so the floor, median and ceiling are inferred from text and probabilities rather than observed. Popularity and archetype usage were not credited, and card scores were not averaged into the deck score.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 42 | Starter P(≥1 in opening 5) ≈ 0.25 per 3-copy card, and the legal copy counts cut the Kewl Tune core to 1 copy each (Inferred). |
| D2 | Opening-Hand Quality & Brick Management | 40 | Hand traps and Tech make up 36 of 55 main cards; few hands are full-function with 26 Tuners in the deck (Inferred). |
| D3 | Combo Conversion & Ceiling | 45 | No recorded combos; the Kewl Tune Synchro line reads as a multi-step ceiling, but legally it is thin (Inferred). |
| D4 | Combo Floor & Median Output | 35 | No combo boards; median output is inferred to be low because the Synchro line depends on several specific pieces (Inferred). |
| D5 | Interruption Resilience & Route Redundancy | 55 | Ash Blossom, Effect Veiler, Ghost Belle and Infinite Impermanence give multiple independent interruption routes (Inferred). |
| D6 | Resource Economy, Recovery & Grind | 55 | Greed draws (Pot of Desires, Pot of Sloth) and Mulcharmy draw effects give card economy; recursion from GY Tuners (Inferred). |
| D7 | End-Board & Interaction Quality | 65 | 15 hand traps and 17 negation texts across layered interaction; Harpie's Feather Duster and Lightning Storm add board wipes (Inferred semantic read). |
| D8 | Going-Second & Board-Breaking Power | 70 | Hand traps and Dominus Purge help stop an established board; the going-second split is not measured (Inferred). |
| D9 | Offensive Pressure & Closing Power | 50 | Synchro bosses (Kewl Tune B2B 3200 ATK, Super Starslayer TY-PHON 2900 ATK) can close, but no recorded end-board data exists (Inferred). |
| D10 | Main Deck Efficiency & Flexibility | 40 | 55 main cards with 26 Tuners and 22 Level 0 spells dilutes the core, and the 3-copy Kewl Tune stack breaks the copy limits (Verified legality, Inferred efficiency). |
| D11 | Extra Deck Efficiency & Coverage | 60 | 14 Synchro and 1 Xyz with 12 distinct Extra Deck cards, all in the Kewl Tune and Synchro families; Extra Deck coverage is reasonable (Verified composition). |
| D12 | Side Deck Adaptability | 10 | Side Deck count is 0 and no post-side data exists, so adaptability is unmeasurable (Verified count; Provisional score). |
| D13 | Matchup Coverage & Format Fit | 25 | No tournament link and no dated metagame sample; the Illegal status also removes any format fit (Provisional). |
| D14 | Pilotability & Error Tolerance | 40 | Multi-step Synchro sequencing with several once-per-turn effects and a Tuner-heavy hand is error-prone to pilot (Inferred). |
How the score was computed
Strategy profile: Combo profile only; Stun interaction noted but not blended. Structural ≈ 48, Going First ≈ 45, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 35. Modifiers: banlist exposure (-8); engine conflicts (-4). Final formula: Illegal list: structural-only; Final capped at 20 per rubric Step 2 (the 0.80*Structural + 0.20*TournamentReliability formula is not applied to illegal decks)
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 interaction: 15 hand traps and 17 negation texts across several card types
- Multiple Synchro bosses with Tuner-based recursion
- Strong Going-Second answer suite (Ash Blossom, Effect Veiler, Infinite Impermanence, Droll & Lock Bird)
Weaknesses
- Illegal list: 3 Forbidden cards and 5 over-limit cards
- Kewl Tune core relies on 3 copies, which is impossible in a legal build
- Large Tuner count (26) and 22 Level 0 spells dilute the main deck
- No Side Deck and no post-side plan
Critical choke points
- Legal restriction of the Kewl Tune core (Limited/Forbidden) breaks the Synchro engine as listed
- A single Synchro boss in the Extra Deck is needed to close the game
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Kewl Tune Rotary (Forbidden) and Triple Tactics Talent (Forbidden) | Legal Tuner or searcher replacements | Removing Forbidden cards is required before the list can be legal. |
| 2 | Excess copies: Ash Blossom (3 to 2), Droll & Lock Bird (2 to 1), Kewl Tune Cue, Synchro and Reco (3 to 1 each) | Non-Limited Tuners or Synchro support | Brings the list within copy limits and restores a legal Kewl Tune core. |
| 3 | Excess Level 0 spells | Side Deck (0 cards now) | Adds post-side adaptability, which the list currently lacks. |
Evidence & confidence
- Verified: Legality: Illegal, with 3 Forbidden copies and 5 over-limit cards; Composition: 55 main, 15 extra, 0 side; Usage: 24 stat rows, 7 core cards present
- Inferred: Starter and consistency odds from hypergeometric estimates; Interaction density from card text; Pilotability and resilience reads
- Provisional: Meta Power (no dated metagame sample); Format fit (no tournament link)
- Data gaps: no combos supplied, so combo floor/median/ceiling is text-only inference no tournament link, so archetype meta-share and per-pilot match record are absent no win-rate telemetry (going-first/second, matchup, brick/starter rates) exists in YGOVN no Side Deck, so post-side scoring is provisional Meta Power is Provisional unless a dated metagame sample is supplied
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