Megalith Deck #768840 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

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

Legality

Main 54 / Extra 12 / Side 0 — status: Illegal. 1 violation(s).

Identity & game plan

• Win condition: Ritual Summon large Megalith and Impcantation bosses (Notrah Plura 3700 ATK, Gravity Dragon and Black Chaos MAX 2800 ATK) through repeated Ritual chains; Odd-Eyes and Sky Striker Link/Fusion boards with Odd-Eyes Vortex Dragon and Sky Striker Ace Link threats
• Turn 1 (going first): Search Megalith or Impcantation pieces with Anastasis, Preparation of Rites and Impcantation Candoll/Talismandra, then Ritual Summon a Megalith boss through Phul, Hagith or Bethor tributes
• Turn 2 (going second): Hold Ash Blossom, Ghost Ogre and Droll & Lock Bird to answer the first opposing starter, then rebuild through Megalith recursion from the GY
• Recovery: Megalith Anastasis and Preparation of Rites return Ritual Monsters and Ritual Spells from the GY; Ritual Monsters with search effects refill the hand
• After siding: No side deck is registered, so the post-side plan is unverified and cannot be rated

Why it scores here

The deck opens a functional plan at a plausible rate: the archetype core of 18 Megalith copies gives an estimated 0.88 chance of at least one core card in a 5-card opening hand (Inferred), and 24 searcher-text cards add redundancy. Its conversion ceiling is high because Ritual chains can reach 2800 to 3700 ATK bosses, but no recorded boards exist, so the floor and median are scored only from text and rated Provisional. Seven hand traps and about 10 negation texts give real interruption and going-second resilience, though the list mixes Impcantation, Sky Striker, Odd-Eyes and Cyberse cards, which reduces engine cohesion (exact Megalith purity is 27.3 percent). Popularity and archetype usage did not earn points, and card scores were not averaged; the deck is capped to 30 because it is illegal by one Ash Blossom copy.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 54.9, Going First ≈ 56, Going Second ≈ 52, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: illegal copy-limit cap (-23). Final formula: Illegal cap: uncapped 0.80*Structural(54.9) + 0.20*TournamentReliability(45) = 53; Meta provisional; capped to 30 as theoretical/structural-only

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.88 · key two-card combo ≈ — · full-brick estimate ≈ 0.12 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• 18 Megalith core copies with 24 searcher-text cards give a likely opening starter
• Seven hand traps and 10 negation-text cards cover the going-second turn
• Ritual bosses with 2800 to 3700 ATK close games quickly

Weaknesses

• Illegal: Ash Blossom & Joyous Spring is run 3 times against a limit of 2
• Low exact archetype purity (27.3 percent) across Impcantation, Sky Striker, Odd-Eyes and Cyberse
• No side deck registered, so no post-side plan

Critical choke points

• A single Ritual Spell is needed to start most Megalith and Impcantation lines
• Going-second lines depend on hand-trap density rather than a second independent engine

Recommended changes

Evidence & confidence

• Verified: Illegal status: Ash Blossom & Joyous Spring copies run 3 vs legal 2; Main 54, Extra 12, Side 0; sizes within OCG rules; Boss stats: Notrah Plura 3700 ATK, Gravity Dragon 2800 ATK, Black Chaos MAX 2800 ATK; Exact Megalith purity 27.3 percent
• Inferred: At least one archetype core card in opening hand ≈ 0.88; Going-second hand-trap coverage ≈ 58 percent; Interaction density and resilience scores from card text
• Provisional: Meta Power (null) and matchup fit (D13); Median output (D4) without recorded boards
• Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN — those signals are Inferred or Unknown no side deck registered — post-side plan cannot be rated Meta Power is Provisional unless a dated metagame sample is supplied