Phantasm Spiral Deck #46029 — Yu-Gi-Oh! TCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 28/100 (±8 · Confidence: Medium)

• Primary strategy: Stun / Control
• Secondary strategies: Floodgate, Midrange
• Format: tcg

Legality

Main 59 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 5 violation(s).

Identity & game plan

• Win condition: Grind via floodgate lock and interaction negation under Umi / field-spell setup; XYZ monster attrition and board pressure
• Turn 1 (going first): Establish Pacifis (Umi), layer interaction traps (Skill Drain, Solemn Judgment, Sea Stealth Attack), accumulate advantage via searchers and recursion
• Turn 2 (going second): Use Lightning Storm and removal traps (Torrential Tribute, Paleozoic effects) to clear the opponent's board, then recover with Umi engine and XYZ toolbox
• Recovery: Banish Phantasm Spiral/Paleozoic traps from GY to extend board, recycle via Sea Stealth II and Paleozoic Xyz (Opabinia), re-establish Umi field spell with Terraforming/Metaverse
• After siding: No side deck present; theoretical adaptability limited; reliant on main-deck floodgate density

Why it scores here

This deck is illegal in TCG format, containing multiple banlist violations (Solemn Judgment x3, Skill Drain x3, Summon Limit x2, Abyss Dweller x2, Bahamut Shark x1), which caps its evaluation as theoretical. Setting aside legality: the deck is a mid-range control-stun shell built around Umi field-spell setup (Pacifis) and XYZ toolbox. It opens with moderate consistency on searchers (P≥1 ≈ 0.66 for searcher effects), but hand quality is compromised by overlapping Normal Summon starters (three copies each of Megalosmasher X and duplicated Pacifis/Sonar), creating significant brick risk. The end-board produces interaction through layered traps and Skill Drain / Solemn Judgment negation, but lacks independent combo lines or setup redundancy; disruption to the Umi engine stalls recovery. Going-second removal (Lightning Storm, Torrential Tribute, Paleozoic effects) is present but narrow. Offensive pressure is minimal—the deck grinds via attrition and stalling, not tempo or lethal. No side deck (0/15) eliminates post-side adaptability. The list deviates sharply from archetype standards (0% of Phantasm Spiral core cards present; only 8 of 66 slots are archetype-exact), reflecting a rogue stun-control mashup incompatible with current format speed and more vulnerable to hand-trap denial than modern decks.

Dimension scores

How the score was computed

Strategy profile: 70% Stun / 30% Midrange. Structural ≈ 43, Going First ≈ 48, Going Second ≈ 52, Meta = provisional, Tournament Reliability ≈ 38. Modifiers: Illegal status (banlist violations) (-15); No side deck (-5); Non-standard archetype composition (-4); Weak going-first plan (-3). Final formula: Illegal deck; structural score capped. 0.80*Structural(43) + 0.20*TournamentReliability(38) = 41.8 adjusted to 28 for illegality + missing side deck + non-standard archetype hybrid + weak T1 plan + no hand-trap denial; Meta provisional (no dated sample)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.66 · 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

• Layered interaction: Solemn Judgment, Skill Drain, Sea Stealth Attack, Paleozoic removal create multiple denial axes
• Grind capability via Paleozoic recursion (Opabinia XYZ), Sea Stealth II bounce, and trap recursion from GY
• XYZ toolbox breadth (15 distinct extra-deck options) provides coverage for rank-4 and rank-2 lines
• Going-second removal (Lightning Storm, Torrential Tribute, Harpie's Feather Duster) available for board breaks
• Umi field-spell synergy leverages searchable Pacifis and Fish Sonar for consistent setup

Weaknesses

• Illegal in TCG format: five cards violate banlist (Solemn Judgment x3, Skill Drain x3, Summon Limit x2, Abyss Dweller x2, Bahamut Shark x1)
• Poor hand quality: overlapping Normal Summon starters (Megalosmasher X, Pacifis both 3-of) create 15–18% redundancy-brick risk
• No hand-trap denial: 0 hand-traps in list makes deck vulnerable to format-staple Ash Blossom and Veiler
• Weak combo ceiling: no established board-per-starter consistency; median output estimated 40–45 PowerIndex without secondary independent lines
• Single Umi-lock choke point: losing the field spell after interruption hampers recovery significantly; only 1.5 independent recovery lines
• Glacial offensive pressure: minimal damage-per-turn (2000–3000 estimated) vs modern meta tempo; no piercing or direct damage
• No side deck (0/15): eliminates post-side adaptability; best-of-3 reliability severely compromised
• Non-standard archetype hybrid: 0% Phantasm Spiral core cards present; rogue stun-control mashup incompatible with current format speed

Critical choke points

• Umi field spell: loss of Pacifis or inability to search it after early disruption collapses the engine; no fallback engine present
• Normal Summon resource: Megalosmasher X and Pacifis compete for the single Normal Summon; using one blocks synergy of the other
• Trap-heavy interaction dependency: deck relies on resolving 3+ trap cards per turn; chain blocking or spell-speed negation (e.g., Ash Blossom on Pacifis search) stalls turn
• Illegal status: five banlist violations make this deck unplayable in official TCG events

Recommended changes

Evidence & confidence

• Verified: Legality status: Illegal (five banlist violations confirmed); Main deck size: 59 (within 40–60 rule but non-standard); Extra deck size: 15 (at maximum); Side deck: 0/15 (present but empty); Card text for all 41 distinct cards resolved; Banlist status: Solemn Judgment (Limited x3), Skill Drain (Limited x3), Summon Limit (Forbidden x2), Abyss Dweller (Forbidden x2), Bahamut Shark (Forbidden x1); Archetype composition: 8 Phantasm Spiral, 8 Umi, 6 Paleozoic, 5 Greed, 31 generic
• Observed: XYZ extra-deck composition: 15 distinct XYZ rank-2, rank-4, rank-12 monsters; no Fusion/Synchro/Link; Trap card density: 29 traps (49% of main deck); Copy histogram: 12 three-ofs, 8 two-ofs, 7 one-ofs (high redundancy)
• Inferred: P(≥1 searcher in hand-5) ≈ 0.658 via hypergeometric (searcher group 11 cards; hand 5 from 59); Full brick rate ≈ 8–12% (three-ofs with overlapping roles); redundancy brick ≈ 15–18% (Normal Summon conflict); Best-line combo ceiling estimated 58–62 PowerIndex (Umi setup + 1–2 XYZ + 1–2 negates); no scored boards present; Median output estimated 40–45 PowerIndex (simplified Umi + searcher + one XYZ); low starter diversity; Interruption resilience: ~1.5 independent recovery lines (Pacifis + Fish Sonar + Paleozoic recursion); Umi lock single choke point; Going-first power ≈ 48 (moderate interaction setup, weak follow-up); Going-second power ≈ 52 (removal tools better than T1 setup); Offensive pressure: 2000–3000 damage-per-turn estimated; no piercing; grind-heavy, not tempo; Pilotability: moderate complexity (5–7 decision nodes per turn); trap sequencing and trap-stack awareness required
• Provisional: Meta Power: null (no dated metagame sample supplied; archetype share unknown; 0% core cards present suggests rogue/off-meta); Tournament Reliability: 38 (estimated from hand stability D1/D2, post-side reliability D12=0, error tolerance D14=41); reliability in best-of-3 severely compromised by lack of side deck
• Data gaps: No combos in evidence; combo floor/median/ceiling are text-only inferences from card interactions No tournament link; archetype meta-share and per-pilot match record unavailable No win-rate telemetry (going-first/second, matchup, game-level, brick/starter rates) — all consistency signals inferred Meta Power is provisional; requires dated metagame sample to compute No guides available for Phantasm Spiral archetype; strategic intent inferred from card roles only Deck is illegal; evaluation is theoretical/structural only