Therions Deck #760514 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±10 · Confidence: Low)

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

Legality

Main 55 / Extra 15 / Side 0 — status: Illegal. 6 violation(s).

Identity & game plan

• Win condition: Extra Deck boss monsters (Cyber Dragon Nova / Infinity, Chimeratech Rampage Dragon, Vallon, Chaos Angel) built from Cyber Dragon and Cyberdark resources, closing through hand-trap-protected boards; Therion "King" Regulus equip and Machine-based fusion/link extension
• Turn 1 (going first): Search a K9 or Cyber searcher, Normal Summon into Cyber Dragon / K9 Jokul-Lantern pressure, and hold Ash Blossom or Droll for the first opposing starter
• Turn 2 (going second): Use the hand traps (Ash Blossom, Infinite Impermanence, Droll, Ghost Belle, Nibiru) to answer the opponent's starter, then rebuild through searchers and Pot of Prosperity
• Recovery: Recur Cyber Dragon and Cyberdark monsters from the GY through Nova, Regulus and Cyberdark Realm; no evidence of a recorded recovery line
• After siding: Not evaluable: the deck has zero side-deck cards, so no post-side plan exists

Why it scores here

The deck reliably finds a searcher (about 94% for at least one in a 5-card opening hand) and runs a dense interaction layer of 11 hand traps and 16 negation-text cards, which is where most of its structural score comes from. Its engine is split across Cyber Dragon, Cyberdark, K9, Mulcharmy and Therion lines, with only 39 distinct main-deck cards and 70 of 55 copies outside the exact Therions name, so the list reads as a toolbox rather than a single coherent engine. There is no combo or board data, so conversion and floor/median scores are text-only inferences with low confidence and are not based on any recorded boards. The deck is Illegal: it runs 3 Ash Blossom against a limit of 2, 2 Droll against a limit of 1, and four Forbidden cards (Called by the Grave, Triple Tactics Talent, Spell Canceller, Saryuja Skull Dread), so the score is capped at 25 and labelled theoretical/structural only. Archetype popularity and usage statistics confirm the list is a real build but did not add points, and no card scores were averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Midrange primary, Stun secondary (structural weights from Midrange profile; D13 provisional). Structural ≈ 53, Going First ≈ 50, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist_exposure (-12). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability = 51.4; minus 12 banlist exposure = 39.4; capped at 25 because legality status is Illegal (theoretical/structural only)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.94 · key two-card combo ≈ — · full-brick estimate ≈ 0.39 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Dense interaction: 11 hand traps and 16 negation-text cards
• Searcher density gives about 94% chance of a searcher in opening 5
• Extra Deck covers Xyz, Link, Fusion and Synchro closers

Weaknesses

• Illegal list: copy-limit and Forbidden violations
• Off-archetype spread (70 copies outside the exact Therions name) reduces engine coherence
• No side deck, so no post-side adaptability
• No combo, tournament or guide evidence to confirm conversion

Critical choke points

• Cyber Dragon / Nova line depends on Cyber Dragon monsters being in GY or hand
• Single Therion Regulus is the only main-deck core card above 90% usage

Recommended changes

Evidence & confidence

• Verified: Main 55, Extra 15, Side 0 against 40–60 / 0–15 / 0–15 size rules; Copy-limit violations and Forbidden/Limited status per card; Card stats and text for every listed card; Archetype usage: Regulus 94%, Droll 71%, Ash Blossom 54%
• Inferred: Searcher and archetype-core hypergeometric probabilities; Interaction density from text read; Brick rate and going-first/second split estimates; All combo-related dimension scores (D3, D4) from text only
• Provisional: Meta Power (null); 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 pilot match record absent No win-rate telemetry for this deck Meta Power is provisional without a dated metagame sample No side deck: post-side plan unevaluable No guides attached to the archetype