Harpie Deck #754643 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 31/100 (±10 · Confidence: Low)

• Primary strategy: Stun
• Secondary strategies: Toolbox, Control
• Format: tcg

Legality

Main 40 / Extra 7 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Naturia Synchro/Fusion boss (Naturia Leodrake, Naturia Landoise, Naturia Gaiastrio, Leo the Keeper of the Sacred Tree) backed by negation traps and hand-trap disruption; Naturia Exterio is listed but cannot be Fusion Summoned because its material Naturia Beast is Forbidden
• Turn 1 (going first): Open a Naturia starter (Camellia, Mole Cricket, Antjaw, Blessing) and build a Synchro board while holding Solemn/Infinite Impermanence for the opponent's first answer; each starter is only about 34% likely in a 5-card opener
• Turn 2 (going second): Hold Solemn Judgment, Solemn Warning, Infinite Impermanence and Dark Ruler No More to stop the opponent's board, then reach a Synchro boss with a 6-card hand
• Recovery: Naturia Marron shuffles Naturia monsters from the GY back into the Deck to draw; Naturia Sacred Tree adds a Naturia card when sent to the GY
• After siding: No Side Deck listed, so there is no post-side plan in the evidence

Why it scores here

The deck is Illegal: one Forbidden Naturia Beast is run, so the structural score is shown for reference only and the final score is capped. Its strength is interaction density, with three Solemn cards, Infinite Impermanence, Dark Ruler No More, Harpie's Feather Duster and several Naturia negate/destroy effects, which lifts D7 well above the rest. Starter access is thin: each of the Naturia starters is 2 or 3 copies in 40 cards, roughly a 34% chance per 3-copy card in a 5-card opening hand, and 17 zero-level spells and traps add brick risk (D1, D2). No recorded boards exist, so combo ceiling and median are text-only inferences. Popularity is not a factor here: the archetype label is Harpie but only 1 card is an exact Harpie card, and the deck is built on the Naturia family, so Harpie usage stats do not confirm this list. Scores were set on the deck as a system and were not averaged from card scores.

Dimension scores

How the score was computed

Strategy profile: Stun. Structural ≈ 42, Going First ≈ 40, Going Second ≈ 45, Meta = provisional, Tournament Reliability ≈ 35. Modifiers: illegal_deck_cap (-10); banlist_exposure (0); dependence_on_one_extra_card (0). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional, meta-neutral D13 dropped from Stun weights and renormalized); Illegal cap applied -> 0.8*42 + 0.2*35 - 10 = 30.6, rounded to 31

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.34 · 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 negation and destruction layer: three Solemn cards plus Infinite Impermanence and Dark Ruler No More
• Several Synchro bosses with high ATK (Leo 3100, Gaiastrio 3200, Barkion 2500) and Naturia negation effects on the Extra Deck
• Naturia Marron and Sacred Tree give some recursion and search

Weaknesses

• Illegal: Naturia Beast is run at 1 copy while Forbidden (0 legal)
• Naturia Exterio cannot be Fusion Summoned because its material Naturia Beast is Forbidden
• No Side Deck, so no post-side plan
• Low starter density (each 3-copy starter about 34% per opener) and 17 zero-level cards add brick risk
• Archetype label Harpie does not match the deck, which is Naturia-based (2.1% exact-name purity)

Critical choke points

• Naturia starter access in the opening hand
• Naturia Beast (Forbidden) as the Extra Deck material for Naturia Exterio
• Solemn trio and Infinite Impermanence as the only answers to the opponent's first play

Recommended changes

Evidence & confidence

• Verified: Illegal status: Naturia Beast is 1 copy vs 0 legal (Forbidden); Main 40 / Extra 7 / Side 0 sizes within TCG rules; Harpie's Feather Duster and Solemn trio are Limited/Semi-Limited but at legal counts; Archetype purity: exact Harpie name 2.1%; Naturia spread 30
• Inferred: Starter access per opening hand; Interaction density and layering; Brick risk from 0-level and tech slots
• Provisional: Meta Power (no dated metagame sample); Matchup and format fit (D13)
• Data gaps: No combos supplied: combo floor, median, and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry; going-first and going-second splits are Inferred only No Side Deck listed, so post-side performance cannot be scored Meta Power is Provisional without a dated metagame sample Archetype is tagged Harpie but the deck is Naturia-based; usage stats for Harpie may not apply