Therions Deck #771698 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 50/100 (±7 · Confidence: Medium)

• Primary strategy: Midrange
• Secondary strategies: Toolbox, Fusion/Synchro/Xyz/Link
• Format: ocg

Legality

Main 56 / Extra 14 / Side 0 — status: Legal with warning.

Identity & game plan

• Win condition: LIGHT Machine Union beatdown converting into Extra Deck bosses (ABC-Dragon Buster, XYZ-Hyper Dragon Cannon, Psychic End Punisher, Underworld Goddess).; Hand-trap and removal interaction (Lightning Storm, Harpie's Feather Duster, Evenly Matched) to hold the board while the Union engine rebuilds.
• Turn 1 (going first): Search a Union/ABC starter (Union Hangar, Dragon Ravine, Therion Discolosseum), then start the Union chain with Union Activation or Y-Yare Head and bring out a Fusion or Link finisher; keep Droll & Lock Bird for the opponent's turn.
• Turn 2 (going second): Hold Droll & Lock Bird, Evenly Matched and Mulcharmy Fuwalos as hand interaction (P of at least one hand trap in a 6-card hand is about 0.37), then reset the opposing board with Lightning Storm or Harpie's Feather Duster when it is safe.
• Recovery: Union monsters recur from the GY and Union Pilot/Driver can return to hand; Pot of Sloth and Union Hangar refill the hand.
• After siding: No side deck is registered (0 cards), so no post-side plan exists in the evidence.

Why it scores here

The deck opens a functional plan reasonably often: four searcher-text cards and 16 searcher-text cards in total give P(at least one searcher in a 5-card opening hand) of about 0.83 (Inferred, hypergeometric on the 56-card main). The Union/ABC engine is one line rather than a single starter, so the score reflects consistency on the system and not the average of its cards. Conversion is strong at the top end because the Extra Deck carries several 3000+ ATK bosses, but no recorded boards exist, so median output is a text-based guess and is scored conservatively. Interaction is layered (24 removal-text roles, four hand traps, a negation-text pair) and recovers well through GY recursion, but it has no side deck, the 0% exact-name archetype purity shows a Union/ABC/Machina engine under a Therions label, and five Limited 1-copy staples add brick risk. Popularity did not earn points: the Therion archetype stat is a usage read only, and the deck's core is not the Therion engine.

Dimension scores

How the score was computed

Strategy profile: Primary Midrange only; Toolbox not blended. Structural ≈ 57, Going First ≈ 55, Going Second ≈ 48, Meta = provisional, Tournament Reliability ≈ 47. Modifiers: Engine conflicts / off-archetype spread (-3); No side deck / weak post-side plan (-2). Final formula: 0.80*Structural(57.4) + 0.20*TournamentReliability(47) = 55.3; modifiers -5 → 50 (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.83 · 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

• Layered interaction: four hand traps, two negation-text cards and 24 removal-text roles.
• Strong Extra Deck closers: Regulus 2800, ABC-Dragon Buster 3000, XYZ-Hyper Dragon Cannon 3000, Psychic End Punisher 3500.
• Searcher density: 16 searcher-text cards, P(≥1 in 5) ≈ 0.83.
• Recursion: Union monsters return from GY and Pot of Sloth refills the hand.

Weaknesses

• No side deck: post-side adaptability cannot be scored above the floor.
• Archetype label mismatch: the Therions label covers only two Therion-named cards; the engine is Union/ABC/A-to-Z.
• Five Limited 1-copy cards (Droll & Lock Bird, Harpie's Feather Duster, Magical Mid-Breaker Field, Set Rotation, Terraforming) add situational dead-card risk.
• One passcode (10443957) is unresolved and counted as main, so the list is not fully verified.

Critical choke points

• Union equip chains need a LIGHT Machine monster on the field; a hand without a Level 4 LIGHT Machine starter stalls.
• Single-copy Limited cards (Feather Duster, Droll & Lock Bird) are one-shot interaction with no backup.

Recommended changes

Evidence & confidence

• Verified: Legal with warning: five Limited cards each run at one legal copy; 56 main, 14 extra, 0 side within OCG size rules.; Card text and Extra Deck structure as listed in the evidence.; Usage stat: Therion King Regulus present (94.7% inclusion); Cyber Dragon Nova (63%) and Chimeratech Megafleet Dragon (53%) absent.
• Observed: Side deck is empty (0 cards).
• Inferred: Starter consistency from hypergeometric draws (searcher ≈ 0.83, core ≈ 0.25).; Union engine conversion ceiling from card text; no recorded boards.; Brick and dead-card risk from Limited 1-copy staples and four hand traps.
• Provisional: Meta Power and matchup fit (no dated metagame sample or tournament link).
• 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 was counted as main. No side deck registered; post-side performance and side adaptability unmeasured. No win-rate telemetry: going-first/second, matchup, brick and starter rates are Inferred or Unknown. Meta Power is Provisional unless a dated metagame sample is supplied.