Therions Deck #771318 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 30/100 (±6 · Confidence: Low)

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

Legality

Main 54 / Extra 16 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).

Identity & game plan

• Win condition: Link-based board from R.B. and Sky Striker link monsters, with Nibiru and Regulus as large beatsticks; Recursion of R.B. monsters from the GY through R.B. Operation Test, R.B. Last Stand and R.B. VALCan Rocket
• Turn 1 (going first): Open with R.B. Stage Landing or R.B. Funk Dock to search an R.B. piece, then link out through R.B. Ga10 Cutter or Driller and protect the line with hand traps
• Turn 2 (going second): Use Ash Blossom, Ghost Belle, Ghost Ogre, Droll & Lock Bird and Effect Veiler to stop the opponent's engine, then rebuild from the GY
• Recovery: Recover with GY-based Special Summons from R.B. Operation Test and R.B. Last Stand, then re-link with Extra Deck monsters
• After siding: No Side Deck is registered, so no post-side plan exists

Why it scores here

The deck is scored as a system, not as an average of its 70 card copies. It can reliably open a hand with a hand trap or a starter, since 13 hand-trap copies give about 0.83 chance of at least one going second, while a single 3-copy starter only reaches about 0.26 in a 5-card opening hand. Its plan converts through R.B. and Sky Striker link lines, but no recorded boards exist, so the conversion ceiling and median are text-only inference. Interaction is broad, with 14 negation-text cards and several Quick-Effect hand traps, which lifts the interaction score. Popularity was not credited: the Therions archetype name matches none of the main-deck cards exactly (0% exact purity), and the usage stats only confirm a standard core. The score is capped because the list is illegal (Extra Deck over limit and Ash Blossom over copy limit), so this is a structural read only.

Dimension scores

How the score was computed

Strategy profile: Toolbox. Structural ≈ 44, Going First ≈ 40, Going Second ≈ 47, Meta = provisional, Tournament Reliability ≈ 38. Modifiers: banlist exposure (-6); engine conflicts (-3). Final formula: Structural 43.7 (Toolbox weights); Final = min(0.80*Structural + 0.20*TournamentReliability + Modifiers, 30) = min(33.5, 30) = 30 (Illegal cap; Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.26 · 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

• Broad hand-trap suite (13 copies) covers most Quick-Effect interaction
• Several independent link routes limit single-card dependence for the starter
• Strong going-second answers (Raigeki, Lightning Storm, Harpie's Feather Duster)

Weaknesses

• Illegal list: Extra Deck over limit and Ash Blossom over copy limit
• Three sub-archetypes plus generic tech with no unifying engine
• No Side Deck, so no post-side plan
• Low hand-level consistency: about 0.26 chance of a 3-copy starter in the opening 5

Critical choke points

• Extra Deck over limit must be fixed before the list can be played
• Ash Blossom copy count must drop to 2

Recommended changes

Evidence & confidence

• Verified: Illegal status: Extra Deck count 16 exceeds the maximum of 15; Ash Blossom & Joyous Spring has 3 copies against a Semi-Limited limit of 2; Banlist statuses for Droll & Lock Bird, Harpie's Feather Duster, Sky Striker Mecha - Hornet Drones and Terraforming are Limited, each at 1 copy and legal; Main Deck size 54 is within the 40-60 range; no Side Deck registered
• Inferred: Starter access probabilities from hypergeometric estimates; Hand-trap and negation density from card text; Engine conflicts from archetype spread
• Provisional: Meta Power (no dated metagame sample); Matchup and format fit (no tournament link)
• Data gaps: No combos supplied: floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record absent No win-rate telemetry exists in YGOVN Meta Power is Provisional unless a dated metagame sample is supplied No Side Deck registered for the deck