Therions Deck #767003 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 52/100 (±6 · Confidence: Medium)

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

Legality

Main 58 / Extra 14 / Side 0 — status: Legal with warning.

Identity & game plan

• Win condition: Fusion and Link summons of Cyberdark, Cyber End and Chimeratech bosses (up to 5000 ATK) after a Cyber Dragon or Cyberdark starter opens the board; Power Bond into a Machine Fusion boss, and Cyber Eternity Dragon recursion from the GY
• Turn 1 (going first): Search through Cyber Dragon Core or Cybernetic Horizon into a Cyber Dragon / Cyberdark engine, then build toward a Fusion boss while holding Infinite Impermanence and Cosmic Cyclone for the opponent's first play
• Turn 2 (going second): Open with a hand trap (D.D. Crow, Artifact Lancea, Ghost Belle, Infinite Impermanence) to stop the opponent's first line, then rebuild through a Cyber Dragon searcher
• Recovery: Recur Cyberdark Claw, Cyberdark Cannon and Cyberdark Horn from the GY as Equip-based extenders and reuse Cyber Dragon Herz / Cyber Dragon Nova from the GY
• After siding: Not supported: the deck runs zero side-deck cards, so there is no defined post-side plan

Why it scores here

The deck opens a functional plan through several Cyber Dragon and Cyberdark searchers (about 92% chance of at least one searcher-text card in a 5-card opening hand, Inferred), then converts that into Fusion and Link pressure through 10 Fusion and 3 Link monsters in the Extra Deck. Its interaction layer is the strongest part of the system: three Cosmic Cyclone, three Infinite Impermanence, three Lightning Storm, plus Raigeki, Harpie's Feather Duster and Dark Ruler No More give it removal and negation density across both turn orders, and 10 hand traps carry about a 70% chance of at least one going second. The score is held back by a 48 brick-management read (many conditional cards such as Lightning Storm, Cyber Dragon and Sales Ban), the absence of any recorded boards so combo ceiling and median are text-only inferences, and an unsupported post-side plan with zero side-deck cards. Archetype popularity did not earn points (usage stats only confirm the list is real, and meta-share is unavailable), and the score is not an average of the individual card scores.

Dimension scores

How the score was computed

Strategy profile: Midrange primary, Toolbox secondary (no separate blend weights applied; Midrange profile used directly). Structural ≈ 61, Going First ≈ 64, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: engine conflicts (-4); no side deck / weak post-side plan (-2); banlist exposure (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional, no dated metagame sample). Structural = 60.6 (Midrange profile); 0.80*60.6 + 0.20*50 = 58.5; modifiers -7 => 51.5, rounded to 52

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.92 · 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

• Heavy interaction layer (Cosmic Cyclone x3, Infinite Impermanence x3, Lightning Storm x3, Raigeki, Feather Duster, Dark Ruler No More)
• Ten hand traps give a strong going-second presence (about 0.70 in a 6-card hand)
• Multiple independent starters and GY recursion (Claw, Cannon, Horn, Herz, Nova) keep a second route
• High-ceiling closers in the Extra Deck (Cyberdark End Dragon 5000 ATK, Cyber End Dragon 4000 ATK)

Weaknesses

• Six sub-archetypes with 0% exact-name purity reduce engine coherence
• Many conditional cards (Lightning Storm, Cyber Dragon, Sales Ban) increase dead-draw risk
• No side deck at all, so no post-side adaptability
• No combo records, so floor and median output cannot be verified

Critical choke points

• Cyber Dragon / Cyberdark starter on T1: a single hand trap or Ash-style interruption can stop the engine (Inferred)
• Fusion materials and Extra Deck summon conditions depend on specific monsters being in the field or GY (Inferred)

Recommended changes

Evidence & confidence

• Verified: Main 58 / Extra 14 / Side 0 fall inside OCG size rules (main 40-60, extra 0-15, side 0-15); Harpie's Feather Duster and PSY-Framegear Gamma are Limited at 1 copy each (legal); Extra Deck: 10 Fusion, 3 Link, 1 XYZ; Hypergeometric draw figures reproduced from the resolved main-deck list
• Observed: Usage statistics: 8 archetype rows, including Therion King Regulus at 90% and Infinite Impermanence at 52%
• Inferred: Consistency and brick rates (D1, D2); Interaction quality and going-second value (D7, D8); Closing power from card text and stats (D9); Engine coherence and conflicts (D10, modifiers)
• Provisional: Meta Power (null, no dated metagame sample); Format fit and matchup coverage (D13); Median combo output (D4) without recorded boards
• Data gaps: Title is null for this deck; name is taken from archetype only No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot match record absent One passcode (10443957) in CardIDList could not be resolved to a card (counted as main) No win-rate telemetry (going-first/second, matchup, brick/starter rates) Meta Power is provisional unless a dated metagame sample is supplied Side deck is empty, so post-side behavior cannot be evaluated