Harpie Deck #771710 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Stun, Toolbox
• Format: ocg

Legality

Main 56 / Extra 14 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).

Identity & game plan

• Win condition: Harpie Lady engine pressure via Cyber Slash Harpie Lady, Harpie's Pet Phantasmal Dragon and Harpie Conductor, supported by hand traps; Off-archetype Extra Deck boss monsters (Mecha Phantom Beast Dracossack, Windwitch - Winter Bell, Cyber Dragon Nova, Raidraptor - Arsenal Falcon)
• Turn 1 (going first): Open a Harpie starter with Elegant Egotist, Hysteric Sign or Harpie Perfumer, keep Mystical Space Typhoon and Harpie's Feather Duster for backrow, and link or synchro into Cyber Slash (Inferred)
• Turn 2 (going second): Use Ash Blossom, Ghost Ogre & Snow Rabbit, Effect Veiler and Infinite Impermanence to disrupt the opponent's starter, then rebuild through Harpie Lady searches (Inferred)
• Recovery: Recur Harpie Lady monsters from the GY through Harpie Channeler and Harpie Harpist, and reuse Harpie Lady searchers through Hysteric Sign and Glass Bell (Inferred)
• After siding: Not evaluable: the Side Deck is empty, so there is no best-of-3 adjustment plan

Why it scores here

The deck is scored as a system, not as an average of its cards. It runs a Harpie core (Harpie Lady, Harpie Channeler, Harpie Perfumer, Elegant Egotist, Hysteric Sign) that can reach its Extra Deck bosses, and it is protected by a dense layer of hand traps and negates (12 hand-trap tags, 18 negation-text cards). Its interaction density is the strongest signal, and the going-second plan is credible. Consistency is weaker: only 38.6% of the Main Deck is exact-name Harpie, and 43 copies are off-archetype (Solemn, Windwitch, Knightmare, Raidraptor, Cyber Dragon, Mecha Phantom Beast, Stellarknight). The probability of a starter in a 5-card opening hand is only about 0.25 per 3-copy card, so the deck is inconsistent on the opening. The deck is capped at 30 because it is illegal: Ash Blossom and Solemn Warning are each run three times against a two-copy OCG limit. No combos were supplied, so the ceiling and median are text-only estimates. Popularity and archetype share did not earn points, and no points come from averaging card scores.

Dimension scores

How the score was computed

Strategy profile: Midrange primary; hand-trap density (12 hand-trap tags) is a Stun-leaning secondary, disclosed as a structural judgement rather than a computed blend. Structural ≈ 49, Going First ≈ 52, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: Illegal copy-limit violation (-12); Unresolved passcode (0). Final formula: Illegal: pre-cap 0.80*Structural(49) + 0.20*TournamentReliability(42) + copy-limit modifier(-12) ~= 36; capped at 30 per the Illegal rule (theoretical/structural only). Meta Power provisional/null.

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 hand-trap and negate layer (12 hand traps, 18 negation-text cards) gives strong interaction on both turns
• Harpie Lady searchers (Hysteric Sign, Harpie Queen, Glass Bell) give a real search engine
• Extra Deck bosses (Cyber Slash, Phantasmal Dragon, Dracossack, Winter Bell) provide 2000-2600 ATK closing power
• Feather Duster, the main usage-core card that is present, supports the backrow-removal plan

Weaknesses

• Illegal list: Ash Blossom and Solemn Warning are each over the Semi-Limited copy limit
• Low exact-archetype purity (38.6%) and 43 off-archetype copies weaken the engine
• Extra Deck spread across 7 sub-archetypes with 12 distinct names
• Empty Side Deck, so no best-of-3 adjustment
• No recorded combos, so the ceiling and median are untested

Critical choke points

• Any Harpie Lady starter: a 3-of starter has about a 25% chance to be in the going-first opening hand
• Opponent's negation or hand-trap answers to Harpie Lady, since few non-Harpie cards can replace the engine
• Illegal copy counts: the list cannot be played in a legal OCG event as built

Recommended changes

Evidence & confidence

• Verified: Main 56 and Extra 14 are within OCG size rules (40-60 / 0-15); Ash Blossom & Joyous Spring and Solemn Warning are each run 3 times against a limit of 2 (OCG Semi-Limited); Harpie's Feather Duster (Limited, 1 copy) and S:P Little Knight (Limited, 1 copy) are within their limits; Exact-name Harpie purity is 38.6% (27 of 70 copies)
• Inferred: Starter P(>=1 in opening hand) is about 0.25 per 3-copy card (hypergeometric); Interaction density is high based on 12 hand traps and 18 negation-text cards; Going-second plan rests on hand-trap disruption; Strategy classification as Midrange with a Stun secondary
• Provisional: Meta Power and matchup fit (no dated metagame sample, no tournament link); Side Deck adaptability (Side Deck is empty)
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot match record are absent Passcode 10443957 is unresolved and counted as Main Deck Side Deck is empty: no best-of-3 plan No win-rate telemetry: going-first/second, matchup and brick rates are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied