Therions Deck #772384 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

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

Legality

Main 61 / Extra 14 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Union-equip boss pressure (Union Hangar, Union Activation and the A-to-Z / ABC Union monsters) feeding Extra Deck bosses such as ABC-Dragon Buster, XYZ-Hyper Dragon Cannon and Galaxy-Eyes Tachyon Primal, with Therion King Regulus as the main Machine boss; Hand-trap-supported disruption that wins by denying the opponent's board and draw
• Turn 1 (going first): Search a Union or Therion starter with Union Hangar or Therion Discolosseum, then equip a Union monster to a LIGHT Machine and attack or extend; no reliable 2-card bootstrap is evidenced
• Turn 2 (going second): Keep a hand with a hand trap (Ash Blossom, Ghost Belle, Maxx C, Droll and Lock Bird, Infinite Impermanence, Nibiru) and answer the opponent's first board before rebuilding through Union searches
• Recovery: Recover with searchers (17 searcher-text cards) and GY recursion (Union Activation, Galaxy Journey, Therion King Regulus self-summon)
• After siding: Not evaluable: the deck has 0 side cards, so no post-side plan exists

Why it scores here

The deck is scored as a system, not as an average of its cards. It reliably opens a searcher (about 0.82 chance of at least one searcher in a 5-card opening hand) and has enough hand traps (12 cards, about 0.75 chance of one in a 6-card going-second hand) to interact with a first board. Its strongest scores come from interruption resilience and going-second interaction, and its weakest from the absence of recorded combos, a 0-card side deck, and a 61-card main with a Forbidden card. The list is Illegal, so it is capped to a theoretical, structural-only score of 30. Popularity did not earn points: the Therions archetype usage stats confirm the core is real but do not add power.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 54, Going First ≈ 52, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: banlist exposure (-8); illegal_cap (-14). Final formula: No reliable metagame: 0.80*Structural(54.3) + 0.20*TournamentReliability(42) = 51.9; modifiers -8 gives 43.9; Illegal cap applied, so score = 30 (theoretical / structural-only, not a normal Final Contextual score)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.82 · 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

• Strong interruption package: 12 hand traps and about 15 negation-text cards
• Reliable searcher density: 17 searcher-text cards give a high chance of a search in the opening hand
• Varied recovery routes through Union Activation, Galaxy Journey and Therion Discolosseum

Weaknesses

• Illegal list: Triple Tactics Talent is Forbidden and the Main Deck has 61 cards against a 60-card cap
• No side deck, so there is no post-side adaptability
• Four Extra Deck summoning types with little shared engine (Fusion, Link, XYZ, Synchro)
• 75 of 61 Main cards are outside the exact Therion archetype, which lowers engine coherence

Critical choke points

• Union monsters need an equip target, so the Union engine stalls without a LIGHT Machine on board
• Several boss Extra Deck monsters need specific Fusion or Union materials, which can be unavailable after interruption

Recommended changes

Evidence & confidence

• Verified: Triple Tactics Talent is Forbidden and run 1 copy (legal 0); Main Deck size is 61, outside the OCG range of 40 to 60; Side deck is 0 cards; 17 searcher-text cards, 12 hand traps and 15 negation-text cards from card flags and text; Ash Blossom and Ghost Belle hand-trap text and copy counts
• Observed: Usage stats show Therion King Regulus at 94.7% inclusion across the archetype sample (2 copies here)
• Inferred: P(>=1 searcher in 5) about 0.82 (hypergeometric); Union engine can go live from a 2-card bootstrap (Inferred); Interaction density is high and gives the going-second advantage
• Provisional: Meta Power is null: no dated metagame sample; Matchup fit is unknown: no tournament link
• Data gaps: Illegal list (Forbidden card and 61 Main cards) means no normal Final Contextual score 1 passcode in CardIDList (10443957) could not be resolved to a card and was counted as Main No recorded combos (0 parseable boards), so floor, median and ceiling are text-only inference No side deck, so post-side adaptability cannot be scored No tournament link: archetype meta-share and per-pilot match record absent No win-rate telemetry exists in YGOVN; all consistency values are Inferred Meta Power is Provisional unless a dated metagame sample is supplied