Ninja Deck #678993 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±10 · Confidence: Low)

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

Legality

Main 55 / Extra 15 / Side 0 — status: Illegal. 5 violation(s).

Identity & game plan

• Win condition: Extra-Deck boss pressure: Ultimate Great Insect (3000), Borrelsword Dragon (3000), Super Starslayer TY-PHON (2900), plus Meizen the Battle Ninja direct attacks (Inferred); Ninja monster beats supported by Blade Armor Ninja's extra attack and Jioh's 2300 ATK (Inferred)
• Turn 1 (going first): Open a Ninja monster (Tobari, Mitsu, Hanzo) or a Mulcharmy from hand, then extend into Ninjitsu Art sets and a Fusion or Link Summon (Inferred)
• Turn 2 (going second): Hand trap (Ash, Infinite Impermanence, Evenly Matched, Droll) to interrupt the opponent's first summon, then rebuild through Ninja monsters recursed from hand or GY (Inferred)
• Recovery: Tobari and Baku return from hand or GY to the field and Ninjitsu Art Duplication / Dancing Leaves reuse Ninja monsters (Inferred)
• After siding: None: the Side Deck is empty (0 cards), so there is no post-side plan (Verified)

Why it scores here

This deck is scored as a theoretical system only, because it is Illegal: five copy-limit violations (three Forbidden cards and two over-limit Limited or Semi-Limited cards) cap the final score at 30. Its structural read of about 55 comes from how the list behaves as a system: a 14-monster Ninja starter core gives roughly 79% chance of a Ninja monster in the opening five, and about 94% for a Ninja or Mulcharmy summoner. Interaction is dense on paper (Ash, Infinite Impermanence, Evenly Matched, Droll) and the Extra Deck supplies several strong closers. The score is held back by the empty-field Mulcharmy engine conflicting with the backrow and set-based Ninja lines, a main deck with only 34% exact-archetype purity, an empty Side Deck, and no recorded boards to confirm the ceiling. Archetype popularity and the Ninja usage statistics did not earn points, and card scores were not averaged.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 55, Going First ≈ 58, Going Second ≈ 64, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: Banlist exposure (-6); Engine conflict (-2); Off-archetype Extra Deck slots (-2); Illegal cap (-15). Final formula: Illegal deck: theoretical only. Structural 55 less modifiers (-10) gives 45, then capped to 30 for illegal copy limits. Meta provisional/null.

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.79 · key two-card combo ≈ — · full-brick estimate ≈ 0.06 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Dense Ninja starter core (14 monsters) with recursion (Tobari, Baku)
• Layered hand-trap and negate suite (Ash, Infinite Impermanence, Evenly Matched, Droll)
• Strong Extra Deck closers (Ultimate Great Insect, Borrelsword, TY-PHON, Meizen)

Weaknesses

• Illegal copy limits on five cards (three Forbidden)
• Empty Side Deck: no post-side plan
• Low exact-archetype purity (34%) and empty-field Mulcharmy conflict with backrow lines
• No combo boards recorded to confirm the ceiling or median

Critical choke points

• Ash Blossom and Droll are over the copy limit, so the list cannot be played as built
• Mulcharmy needs an empty field, conflicting with Ninja set and backrow lines
• Fusion/Link routes need two Ninja monsters of different types on the field

Recommended changes

Evidence & confidence

• Verified: Illegal status with five copy-limit violations (three Forbidden); Main 55, Extra 15, Side 0 against size rules 40-60, 0-15, 0-15; Card texts and copy counts; Probabilities (hypergeometric, reproduced)
• Inferred: Starter and brick rates from hypergeometric draws; Engine conflict between Mulcharmy and backrow lines; Interaction and closing quality from text; Going-first and going-second estimates
• Provisional: Meta Power (no dated sample); D13 matchup and format fit
• 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/second, matchup, brick/starter/OTK rates) No Side Deck (0 cards): post-side performance cannot be assessed Usage statistics flag every Extra Deck core card as not in this deck (Meizen, Yaguramaru, Saizo, Ultimate Great Insect, S:P Little Knight, Super Starslayer, Blade Armor), though the card list shows them present; the in_this_deck field appears to check the Main Deck only. The reported 61.9% core presence is therefore understated and was not used as evidence