Melffy Deck #753089 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 63/100 (±8 · Confidence: Low)

• Primary strategy: Midrange
• Secondary strategies: Stun, Synchro/Xyz/Fusion
• Format: ocg

Legality

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

Identity & game plan

• Win condition: Extra Deck Synchro/Xyz/Fusion bosses (Joyous Melffys direct attacks, Accel Synchro Stardust Dragon, Satellite Warrior) built off a swarm of Level 2 Beast monsters; Hand-trap and negation stall (12 hand traps, Herald, Stardust Dragon, Dominus Purge) that buys time for the Extra Deck plan
• Turn 1 (going first): Normal Summon Melffy Rabby or Rabbys on T1 (Rabbys adds a Melffy card on Normal Summon), or Melffy Footsteps to search up to 4 Melffy monsters, then Synchro/Xyz from the Level 2 Beasts
• Turn 2 (going second): Hold hand traps (Ash Blossom, Ghost Belle, Infinite Impermanence, Ghost Ogre) for the opponent's first summon or key spell/trap; respond with Level 2 Melffy bounce monsters (Rabbys, Puppy, Wally, Catty, Pony, Fenny) and continue into Extra Deck summons
• Recovery: Re-use the Level 2 Melffy monsters that return to hand on opponent summons (Puppy, Wally, Catty, Pony, Fenny, Pinny), recurse Melffy Footsteps from the GY, and rebuild Xyz/Synchro material from the field
• After siding: None. The deck runs 0 Side Deck cards, so there is no post-side plan and no adaptation for best-of-3

Why it scores here

The deck reliably opens a functional plan: the archetype core (22 copies) has a hypergeometric P(at least one in a 5-card opening hand) of about 0.987, and Melffy Footsteps plus the many Level 2 Beast starters give several independent openings (D1 80, Inferred). Its interaction is dense, with 12 hand traps and about 14 negation-text cards, which lifts end-board and going-second scores (D7 80, D8 72, Inferred from text and the hand-trap probability of 0.90 by going second). Resilience is a real strength because most Level 2 Melffy monsters return to hand and re-summon when the opponent summons, and several recur from the GY (D5 74, D6 72). The deck is held back by the absence of any combo-board data (D3/D4 are text-based and low confidence), no Side Deck (D12 15), an unverified format fit (D13 provisional at 50), and a summon-trigger dependence that is weak against non-summoning lines. The score was built from consistency, interaction and resilience on the deck as a system; Melffy's usage statistics confirm the list is real and standard, but did not add points, and card scores were not averaged.

Dimension scores

How the score was computed

Strategy profile: Midrange (meta-neutral: D13 dropped and remaining weights renormalized by 95). Structural ≈ 68.2, Going First ≈ 68, Going Second ≈ 74, Meta = provisional, Tournament Reliability ≈ 61. Modifiers: Zero Side Deck (-2); Summon-trigger dependence (-2); Banlist exposure (-1); Dead Extra slot (-1); Engine compactness (2). Final formula: 0.80*Structural(68.2, meta-neutral) + 0.20*TournamentReliability(61) + ContextModifiers(-4) = 62.8 -> 63 (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.99 · key two-card combo ≈ — · full-brick estimate ≈ 0.01 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Very high starter density: about 15 Level 2 Melffy Beast monsters plus Footsteps and Hide-and-Seek
• Strong opposing-summon response, with monsters that return and re-summon, giving good resilience
• Dense interaction: 12 hand traps plus Herald, Stardust Dragon, Dominus Purge and Ghost Ogre
• Extra Deck with multiple Synchro and Xyz bosses that give closing power and recursion

Weaknesses

• No Side Deck, so no post-side plan
• Hand traps are dead without an opponent action, which raises brick risk on the going-first hand
• Engine depends on opponent summons, so it is weaker against non-summoning lines
• Divine Arsenal AA-ZEUS is a near-dead Extra slot
• No combo or tournament data, so the floor and ceiling are inferred

Critical choke points

• Turn 1 engine depends on Melffy Footsteps or a T1 Normal Summon of a Level 2 Melffy monster
• Level 2 monsters that bounce on opponent summons are the main resilience line, and they require the opponent to summon

Recommended changes

Evidence & confidence

• Verified: Legal OCG list: 40 Main, 15 Extra, 0 Side; Limited and Semi-Limited copy limits respected; Composition: 21 distinct Main cards, 14 distinct Extra cards, 12 hand traps, 9 searcher-text cards; Archetype core group has 22 copies, usage stats available (20 rows, 55% of core present)
• Inferred: Consistency: P(at least one archetype-core card in a 5-card opening hand) = 0.987; Hand-trap probability: 0.902 for at least one hand trap in a 6-card hand going second; Interaction density and resilience from card text (negation 14, removal 13); Going-first and going-second scores from the dimension blend
• Provisional: Meta Power and D13 matchup fit: no dated metagame sample or tournament link
• 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 No win-rate telemetry: going-first, going-second and matchup signals are inferred Meta Power is provisional without a dated metagame sample Deck title is null in the export