Therions Deck #771129 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

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

Legality

Main 56 / Extra 14 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Extra Deck boards from K9 Xyz, Chimeratech Fusion and Cyber Dragon/Cyberdark Synchro/Xyz lines, converted through 3000+ ATK monsters (K9-X Werewolf, Super Starslayer TY-PHON, Divine Arsenal AA-ZEUS, Nibiru).; Hand-trap attrition: Ash Blossom, Ghost Belle, Ghost Ogre, Effect Veiler, Infinite Impermanence and Droll & Lock Bird slow the opponent while the deck tries to establish a board.
• Turn 1 (going first): Open with a starter from the Cyber Dragon, Cyberdark or K9 groups (roughly one in four 3-copy cards in a 5-card hand), then extend through a Normal Summon or Searcher into a Xyz or Fusion. Hand-traps are dead without a board on going first.
• Turn 2 (going second): Hold 2 to 3 hand-traps in the 6-card hand and use them against the opponent's starter, then build a board from whatever resolves. This is the line the deck is built for.
• Recovery: Searchers (about 20 in the main deck) and Cyber Dragon/Cyberdark recursion recover the hand after an interruption, but the lines are split across four sub-archetypes, so recovery depends on which group survived.
• After siding: None. Side deck is empty (0 cards), so there is no post-side plan.

Why it scores here

The deck is structurally illegal in OCG: it runs 3 copies each of Ash Blossom & Joyous Spring and K9-17 Izuna, which are Semi-Limited (2 max), so the list is capped and labelled theoretical. Its strength is interaction density, with about 19 hand-traps, 16 negation effects and 13 removal-text cards, which can hold a board on going second. Engine coherence is weak: the 70 off-archetype copies span Cyber Dragon, Cyberdark, K9, Mulcharmy and Therion, and the only Therion-named card is one Regulus, so a starter does not reliably lead to a planned line. Floor and median output cannot be measured because no combos were recorded, and there is no side deck, no tournament data and no guide, so popularity and archetype share earned no points. The score comes from the structural read of consistency, interaction and going-second strength on the whole 56/14 list, not from averaging individual card scores.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 49, Going First ≈ 45, Going Second ≈ 60, Meta = provisional, Tournament Reliability ≈ 38. Modifiers: banlist_exposure (-3); engine_conflicts (-4); no_side_deck (-2). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability = 46.96 before modifiers; modifiers total -9 gives 38; Illegal-deck cap at 30 applies, so the score is capped and labelled theoretical/structural-only

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.25 · key two-card combo ≈ — · full-brick estimate ≈ 0.4 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• About 19 hand-traps and 16 negation effects give strong interaction on going second
• Large Extra Deck payoff set reaching 3000+ ATK
• Recursion and about 20 searchers recover resources across interruptions

Weaknesses

• Illegal list: 3 copies each of two Semi-Limited cards
• Four sub-archetypes with 70 off-archetype copies make the engine incoherent
• No side deck
• Brick risk from hand-traps and searchers that need a board

Critical choke points

• K9 and Cyber Dragon starters that open a board are only about one in four per 3-copy card in a 5-card hand
• Going-first hands with no starter have no board-building route

Recommended changes

Evidence & confidence

• Verified: Legality: 56 main, 14 extra, 0 side; Ash Blossom and K9-17 Izuna are 3 copies against a Semi-Limited limit of 2; Four Limited cards present at 1 copy each (legal); Card stats and text excerpts from the export; Side deck is empty
• Observed: No recorded boards exist (combos_evidence total 0)
• Inferred: Consistency and brick estimates from hypergeometric figures; Interaction density from text flags (hand-trap, negation, removal); Engine-coherence read from archetype spread; Going-second strength from hand-trap probability
• Provisional: Meta Power (null) and matchup fit (D13) need a dated metagame sample
• Data gaps: 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 and is counted as main No win-rate telemetry (going-first/second, matchup, brick/starter rates) Meta Power provisional unless a dated metagame sample is supplied Deck has no title (deck_name null) No side deck, so post-side dimensions (D12) are scored from composition only