Kewl Tune Deck #762217 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 65/100 (±6 · Confidence: Medium)

• Primary strategy: Combo
• Secondary strategies: Stun, Toolbox
• Format: master-duel

Legality

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

Identity & game plan

• Win condition: Synchro Summon boss monsters (Kewl Tune Loudness War, Kewl Tune B2B, Zalen, Visas Amritara, Super Starslayer TY-PHON) off Tuner-based Synchro lines, then close with ATK and second-attack effects; Hand-trap-protected Synchro lines that stay live through the opponent's interaction, then a Kewl Tune Synchro search into a Synchro boss
• Turn 1 (going first): Turn 1: Normal Summon a Tuner (Kewl Tune Mix, Kewl Tune Reco, Kewl Tune Rotary, Kewl Tune Cue, or Ghost Belle, Effect Veiler, Ash Blossom) and use its search or Special Summon, then Kewl Tune Synchro or Duelist Genesis to fetch the Synchro Spell for a Turn 1 Synchro line
• Turn 2 (going second): Hold Ash Blossom, Ghost Belle, Effect Veiler, Infinite Impermanence, Droll & Lock Bird and Maxx C to answer the opponent's board, then Synchro Summon from the Tuner recovered in the GY or the hand
• Recovery: Recycle Tuners from the GY through Kewl Tune Mix, Kewl Tune Reco, Kewl Tune RS and Kewl Tune Track Maker, and use Over Tuning to Special Summon further Tuners
• After siding: None. The list has no Side Deck (0 cards), so there is no recorded post-side plan

Why it scores here

The score comes from the system: a Tuner-dense main deck with 15 Tuner-based hand traps and a 15-card Extra Deck that is almost entirely Synchro monsters. The deck reliably opens a live Tuner starter (Kewl Tune archetype core P(open at least one in 5 cards) ≈ 0.997, Inferred) and it keeps interaction up through the opponent's turn, which is where most of its going-second strength comes from. Conversion and median output are scored from text only, since no boards were recorded, so the ceiling (Synchro bosses with 2900 to 3300 ATK) and the floor are both Inferred rather than observed. Brick risk is moderate, because many of the hand traps and Tuners are dead without a Tuner partner. The score is not a popularity bonus: the guide snippets call the archetype strong, but that is community opinion and was not counted. The score is not an average of card scores either, and the lack of a Side Deck and of any meta sample holds it back.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 68.6, Going First ≈ 70, Going Second ≈ 74, Meta = provisional, Tournament Reliability ≈ 60. Modifiers: banlist exposure (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional) = 0.80*68.6 + 0.20*60 - 2 = 64.9, rounded to 65

Probability & combo summary

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

Strengths

• Strong interaction density for going second: 15 hand traps plus negation text on the Extra Deck bosses
• Multiple independent Tuner starters and GY recursion keep the Synchro engine live after a disruption
• High-ATK Synchro bosses (Loudness War, B2B, TY-PHON, Zalen) give a real closing plan
• Legal construction: all copy limits are met and the Extra Deck is full with useful Synchros

Weaknesses

• No Side Deck, so there is no post-side adaptation at all
• Low exact archetype purity (36.4%) means many generic cards compete for slots
• No recorded boards, so ceiling and floor are unmeasured
• Several Limited cards are central to the engine and carry banlist risk

Critical choke points

• A Tuner-light opening hand (only hand traps and no Tuner) cannot start a Synchro line
• Losing the Kewl Tune Mix / Reco / RS recursion pieces to a sweep leaves few GY Tuners to rebuild from

Recommended changes

Evidence & confidence

• Verified: Legal size (40 Main, 15 Extra, 0 Side) and legal copy counts for all 9 restricted cards; Card text for the 19 distinct Main Deck cards and 12 Extra Deck cards from the evidence pack; Hand-trap and negation role counts from curated tags
• Inferred: Archetype core opening probability ≈ 0.997 and hand-trap probability going second ≈ 0.954; Combo ceiling from Synchro boss text; Interaction quality and going-second strength; Brick and pilotability estimates
• Provisional: Meta Power (null, no dated sample); Matchup and format fit (D13); Tournament reliability; Community strength claims in the guides (not counted in the score)
• Data gaps: no combos supplied, so floor, median and ceiling are text-only no tournament link, so archetype meta-share and per-pilot record are absent no win-rate telemetry for this deck no Side Deck, so post-side performance cannot be assessed usage_statistics in_this_deck flags conflict with the card list: Kewl Tune Track Maker, Kewl Tune Remix, Kewl Tune Crackle, Kewl Tune Loudness War, Golden Cloud Beast - Malong and Wind Pegasus @Ignister are listed in the Extra Deck here but marked in_this_deck false. The card list was trusted