Harpie Deck #660441 — Yu-Gi-Oh! Master Duel
42 Main, 15 Extra, incl. Cooky☆Yummy x3, Cupsy☆Yummy x3, Lollipo☆Yummy x3. Created Mar 9, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 03/09/2026
Main Deck (42)
- Cooky☆Yummy x3
- Cupsy☆Yummy x3
- Droll & Lock Bird x2
- Kurikara Divincarnate x1
- Lollipo☆Yummy x3
- Marshmao☆Yummy x2
- Maxx "C" x1
- Mulcharmy Fuwalos x3
- Naturia Antjaw x1
- Naturia Mole Cricket x3
- Naturia Sunflower x1
- Ash Blossom & Joyous Spring x3
- Naturia Camellia x2
- Naturia Stinkbug x1
- Called by the Grave x1
- Crossout Designator x1
- Dark Ruler No More x2
- Harpie's Feather Duster x1
- Naturia Blessing x2
- One for One x1
- Triple Tactics Talent x1
- Yummy☆Surprise x1
- Yummyusment☆Mignon x1
- Infinite Impermanence x1
- Naturia Sacred Tree x1
Extra Deck (15)
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 48/100 (±8 · Confidence: Medium)
| Overall score | Value |
|---|---|
| Structural Deck Power | 48 |
| Going First | 35 |
| Going Second | 25 |
| Meta Power | provisional |
| Tournament Reliability | 30 |
- Primary strategy: Control
- Secondary strategies: none
- Format: master-duel
Legality
Main 42 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s). Restricted cards run: Called by the Grave (Limited), Crossout Designator (Limited), Cupsy☆Yummy (Limited), Harpie's Feather Duster (Limited), Herald of the Arc Light (Limited), Maxx "C" (Limited), One for One (Limited), Droll & Lock Bird (Semi-Limited).
Identity & game plan
Why it scores here
The deck is flagged Illegal due to over-limited Cupsy☆Yummy and multiple Limited/Forbidden cards (Called by the Grave, Crossout Designator, Harpie's Feather Duster, Herald of the Arc Light, Maxx "C", One for One, Droll & Lock Bird), which severely restricts consistency and reliability. Hand integrity is fragile with high brick risk given only 2–3 copies of many searchers and a small deck of 42. The build lacks meaningful combo floor/ceiling depth (0 recorded combos), offers limited interruption resilience, and has weak going-second board-breaking capability. Resource grind is modest and side adaptability is minimal, yielding a constrained overall ceiling despite decent main-deck efficiency.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 40 | Hypergeometric shows ~32% chance to open ≥1 of the 2 archetype-core cards in 5 (Inferred); legality violations degrade consistency (Verified). |
| D2 | Opening-Hand Quality & Brick Management | 35 | 3+ copy common cards and 7 hand-trap copies raise redundancy risk; archetype core present but legality issues hurt reliability (Inferred). |
| D3 | Combo Conversion & Ceiling | 10 | No parseable combo data; text-only inference gives a low ceiling (Inferred). |
| D4 | Combo Floor & Median Output | 10 | Median power index is text-only inference; starter diversity is low (Inferred). |
| D5 | Interruption Resilience & Route Redundancy | 30 | Hand-trap presence and some negation provide moderate interruption handling (Inferred). |
| D6 | Resource Economy, Recovery & Grind | 25 | Resource signature is modest with limited recursion; float potential inferred from sparse card text (Inferred). |
| D7 | End-Board & Interaction Quality | 35 | Negation and removal text across 10 cards support interaction density (Inferred). |
| D8 | Going-Second & Board-Breaking Power | 10 | Going-second breaker presence is low; only 10% board-breaker representation (Inferred). |
| D9 | Offensive Pressure & Closing Power | 20 | End-board ATK/MATK presence is weak; boss monsters not evident (Inferred). |
| D10 | Main Deck Efficiency & Flexibility | 45 | 42-card main with 25 distinct names and 15 extra cards indicates moderate efficiency (Verified). |
| D11 | Extra Deck Efficiency & Coverage | 20 | Extra deck has 15 slots across 3 types with no clear coverage boost (Inferred). |
| D12 | Side Deck Adaptability | 10 | Side deck is empty, so adaptability is minimal (Verified). |
| D13 | Matchup Coverage & Format Fit | 20 | No tournament link or meta data; archetype share is unknown and format fit is provisional (Provisional). |
| D14 | Pilotability & Error Tolerance | 30 | Combo steps are absent in records; decision points appear moderate (Inferred). |
How the score was computed
Strategy profile: Balanced (default). Structural ≈ 48, Going First ≈ 35, Going Second ≈ 25, Meta = provisional, Tournament Reliability ≈ 30. Modifiers: Illegal card count (-15); Brick risk (-7); No recorded combos (-5). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional)
Probability & combo summary
- Opening a starter: P(≥1) ≈ — · 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
- Strong hand-trap and negation suite (7 hand-trap copies, 10 negation-text cards) for interruption resilience.
- Main deck efficiency is decent with a focused 42-card build and 100% core presence (2/2).
- Multiple search and draw effects (Searcher group 6 copies, ~55.7% chance to open ≥1).
Weaknesses
- Illegal status due to multiple Limited/Forbidden and an over-limited card (Cupsy☆Yummy).
- High brick risk on the small 42-card deck (archetype core open chance ~22.7% in 5).
- No recorded combo lines; floor/median/ceiling are text-only inferences with low ceiling.
- Minimal side deck (empty) and low going-second board-breaking capability (10%).
- Fragile consistency: many key effects rely on 1-of copies and limited recursion.
Critical choke points
- Reliance on 1-copy key cards (e.g., Herald of the Arc Light, Triple Tactics Talent) creates single-point failures.
- No combo engine or reliable OTK path; deck leans Control with low burst.
- Illegal cards restrict tournament play and reduce format viability.
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Cupsy☆Yummy (reduce to 1 copy) and all other Illegal/Limited cards to achieve legality. | Add 2–3 additional copies of consistent searchers (e.g., Ash Blossom) and 1–2 dedicated backrow breakers. | Legality is required for any competitive play; reducing singleton choke points and adding redundancy improves consistency. |
| 2 | Over-splashing off-archetype staples that do not synergize. | Include at least 1–2 additional hand-trap copies or a small recursion loop to smooth draws. | Improves brick rate and gives the deck a coherent game plan beyond generic control tools. |
Evidence & confidence
- Verified: Legality status and restriction list from evidence.verification.; Main deck size 42 and card counts from composition.
- Inferred: Opening-hand probabilities from hypergeometric calculations.; Consistency and brick-risk estimates from copy counts and deck size.; Interrupt resilience and interaction level from card text roles.
- Provisional: Combo floor/median/ceiling due to absent parsed boards.; Meta power and matchup outcomes (no dated metagame sample).
- Data gaps: No combo parse data — floor/median/ceiling are text-only inferences. No tournament link or match records — archetype meta-share absent. No win-rate telemetry in YGOVN (going-first/second, matchup, brick rates). Meta Power marked Provisional without a dated metagame sample.
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