Mecha Phantom Beast Deck #773725 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

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

• Primary strategy: Toolbox
• Secondary strategies: Midrange, Tempo
• Format: tcg

Legality

Main 56 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Extra Deck link/Xyz pressure from R.B. and Sky Striker link monsters, with Super Starslayer TY-PHON as a large Xyz finisher; Mecha Phantom Beast and Mulcharmy board presence plus draw engines that grind through repeated hand-trap interaction
• Turn 1 (going first): Open a hand-trap-plus-starter combination (Effect Veiler, Ghost Ogre, Ash Blossom, Infinite Impermanence) to slow the opponent, then Normal Summon an MPB or R.B. starter into a link route; the 1 going-first plan has no recorded boards to confirm it
• Turn 2 (going second): Use the 21 hand traps (negations and removal) to answer the opponent's first board, then rebuild through R.B. Stage Landing and R.B. Operation Test recursion and a link into the Extra Deck
• Recovery: R.B. Funk Dock and R.B. Stage Landing search or revive R.B. monsters, Mulcharmy Fuwalos and Purulia draw cards, and Ghost Belle recursion can refill the hand after a board is cleared
• After siding: No side deck is registered, so no post-side plan can be evaluated

Why it scores here

This list is illegal as submitted (three copies of Ash Blossom & Joyous Spring against a Semi-Limited limit of two), so its score is capped at a theoretical, structural-only value of 30 and it does not receive a normal Final Contextual score. The main deck runs four sub-archetypes (R.B., Mecha Phantom Beast, Mulcharmy, Sky Striker) with an exact-name archetype purity of only 8.5%, which weakens engine coherence even though the hand-trap density (21 cards, 18 negation-text cards) gives the deck strong interruption resilience and end-board interaction on paper. Starter access is moderate: the hypergeometric chance of at least one 3-copy starter in a 5-card going-first hand is about 25%, and the 21 hand traps give roughly a 95% chance of at least one in a going-second six-card hand. No recorded boards exist, so floor, median and ceiling are text-only inferences and are kept well below any best-case reading. Popularity and archetype usage did not earn points, and the score was built on the deck as a system rather than by averaging card scores.

Dimension scores

How the score was computed

Strategy profile: Toolbox 80% / Midrange 20% (structural computed on Toolbox weights). Structural ≈ 53, Going First ≈ 45, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 40. Modifiers: banlist exposure (-12); illegal list cap (-8); hard engine conflict (0). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability = 0.80*53 + 0.20*40 = 50.4; banlist-exposure modifier -12 gives 38.4; illegal-list cap sets final to 30 (theoretical, structural-only)

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

• 21 hand traps with 18 negation-text cards give interaction on the opponent's first board
• Layered removal text (25 cards) and Ghost Belle recursion add durability
• R.B. recursion and Mulcharmy draw effects give some resource regeneration

Weaknesses

• Illegal copy count on Ash Blossom & Joyous Spring
• Four sub-archetypes (R.B., Mecha Phantom Beast, Mulcharmy, Sky Striker) with 8.5% exact-archetype purity
• Empty side deck leaves no post-side plan
• Extra Deck spread across two link engines with no clear single core

Critical choke points

• Each engine's Extra Deck link route depends on specific Link monsters being in hand or GY
• Hand-trap-only hands with no starter are a plausible brick line in going-first openings

Recommended changes

Evidence & confidence

• Verified: Illegal: Ash Blossom & Joyous Spring run 3 copies, Semi-Limited limit 2; Main Deck 56 cards and Extra Deck 15 cards (within the 40-60 and 0-15 size rules); Archetype purity 8.5% exact name, with 65 off-archetype copies; Side deck empty (0 cards)
• Inferred: Hand-trap density gives strong interruption resilience and interaction; Starter access probability about 25% in going-first hands; Going-second hand-trap availability about 95%
• Provisional: Matchup and format fit, since no dated meta sample is supplied; Tournament reliability, since no tournament data is supplied
• Data gaps: No combos supplied, so 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 exists in YGOVN for going-first, going-second, matchup or brick rates Meta Power is provisional unless a dated metagame sample is supplied Empty side deck, so no post-side data exists Deck title is null