Therions Deck #768794 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

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

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

Legality

Main 50 / Extra 19 / Side 0 — status: Illegal. 5 violation(s).

Identity & game plan

• Win condition: Union monster beatdown and Extra Deck summons (Union Controller, ABC-Dragon Buster, XYZ-Hyper Dragon Cannon) backed by Union equip chains; Obelisk the Tormentor and Beast King Barbaros as high-ATK boss monsters once Tributed or Normal Summoned
• Turn 1 (going first): Open with Union Hangar or Union Activation to search a Union monster, then Normal Summon a LIGHT Machine and equip a Union monster through its effect; Ash Blossom and Ghost Belle protect the first Extra Deck summon
• Turn 2 (going second): Hold Ash Blossom, Ghost Belle, Infinite Impermanence and Forbidden Droplet to stop the opponent's first starter, then rebuild through Terraforming, Therion Discolosseum and the Union search effects
• Recovery: Recycle Union monsters from the GY via Union Activation and Gear Gigant X, and re-summon Union monsters from the GY with the equip-and-revive effects
• After siding: No side deck is present, so no post-side plan can be evaluated

Why it scores here

The deck is Illegal in OCG: Ash Blossom is run three times against a limit of two, two Forbidden cards are included, and the Extra Deck holds 19 cards against a maximum of 15, so the score is capped and labelled theoretical and structural only. Structurally, the list has broad search density with 14 searcher-text cards and a reasonable interaction suite of nine hand traps and about fifteen negation effects, which gives it some resilience to the opponent's first starter. Its engine is split across Therion, Union, ABC, Fiendsmith and Machina pieces, so the core archetype group is present in only about 35 percent of opening hands and the cards do not form one coherent line. No combo boards, tournament record or side deck exist, so the ceiling, median and post-side claims are unsupported and the score does not reflect card averages or archetype popularity.

Dimension scores

How the score was computed

Strategy profile: Toolbox. Structural ≈ 42, Going First ≈ 40, Going Second ≈ 38, Meta = provisional, Tournament Reliability ≈ 30. Modifiers: banlist_exposure (-6); extra_deck_over_limit (-3); engine_conflicts (-3). Final formula: Illegal deck: theoretical structural-only score capped at 30; Structural 42 and TournamentReliability 30 (Meta provisional, null)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.28 · 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

• Dense search text across 14 cards supports consistent hand smoothing
• Nine hand traps and about fifteen negation effects give layered interaction
• High-ATK boss monsters (Obelisk, Barbaros, Cannon) provide closing power

Weaknesses

• Illegal in OCG: copy-limit and Extra Deck size violations
• Engine split across several archetypes with 0 percent exact purity
• No side deck and no recorded combos or tournament data

Critical choke points

• Union monster on the field is required for most Extra Deck summons
• Ash Blossom is over the copy limit, so the list cannot be played as built

Recommended changes

Evidence & confidence

• Verified: Illegal status with Ash Blossom at 3 copies against a limit of 2; Crystal Wing Synchro Dragon and Moon of the Closed Heaven are Forbidden in OCG; Extra Deck has 19 cards against an OCG maximum of 15; Main Deck is 50 cards with 31 distinct cards and no side deck
• Inferred: Opening-hand starter probability ≈ 0.28 for a single copy-count group; Union-engine interaction quality and resilience reads from card text
• Provisional: Meta Power and matchup fit, since no dated metagame sample or tournament data is supplied
• Data gaps: No combos supplied, so floor, median and ceiling are text-only inference No tournament link, so archetype meta-share and per-pilot record are absent One passcode (10443957) could not be resolved and is counted as main No win-rate telemetry exists in YGOVN No side deck, so post-side performance is unknown