Crystal Beast Deck #763563 — Yu-Gi-Oh! OCG

Deck — Deck Power Evaluation

Final Contextual Deck Power: 25/100 (±10 · Confidence: Low)

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

Legality

Main 54 / Extra 15 / Side 0 — status: Illegal. 4 violation(s).

Identity & game plan

• Win condition: Ultimate Crystal Rainbow Dragon and Rainbow Dragon (4000 ATK) finishing through the Crystal Beast engine; Rainbow Overdragon (4000 ATK Fusion) and Crystal Beast beatdown with Link pressure
• Turn 1 (going first): Crystal Bond or Rainbow Bridge to search a Crystal Beast, Crystal Beacon or Golden Rule to fill the Spell and Trap Zone, then build toward Rainbow Dragon
• Turn 2 (going second): Hand-trap-free, so answer the opponent via Solemn Judgment or Dark Ruler No More, then rebuild the Crystal Beast board
• Recovery: Crystal Beast monsters re-enter the field as Continuous Spells, and Crystal Conclave can return them to hand, so the engine reloads from the field
• After siding: No Side Deck is present (side_count 0), so there is no post-side plan

Why it scores here

The deck is Illegal in OCG because four Forbidden Extra Deck cards are run at one copy each, so it receives a capped score rather than a normal Final Contextual score. The structural read comes from the Crystal Beast core: 13 archetype-core copies give a 0.763 probability of at least one core card in a 5-card opening hand, and 19 searcher-text cards give 0.897, so the engine is reasonably accessible on paper. Combo ceiling and median are not measured because no boards were supplied, so conversion scores are text-only Inferred reads. Interaction is thin (Solemn Judgment, Dark Ruler No More, Crystal Miracle, Harpie's Feather Duster, with no hand traps), and there is no Side Deck. Popularity and archetype usage did not earn points, and card scores were not averaged into the deck score.

Dimension scores

How the score was computed

Strategy profile: Midrange primary (approx. 85%) with Combo secondary (approx. 15%). Structural ≈ 51, Going First ≈ 50, Going Second ≈ 43, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist exposure (-12). Final formula: No reliable metagame: 0.80*51 + 0.20*50 = 50.8; modifiers -12 gives 38.8; Illegal legality cap applied, final 25

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.76 · 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

• Crystal Beast core is accessible, with a 0.763 chance of at least one core card in a 5-card opening hand
• Searcher density is high (19 searcher-text cards), which supports consistency
• Closing threats at 4000 ATK (Rainbow Dragon, Rainbow Overdragon)

Weaknesses

• Illegal in OCG: four Forbidden Extra Deck cards at one copy each
• No hand traps and no floodgates, so going-second interaction is thin
• No Side Deck, so there is no post-side adaptation
• High share of level-0 Spell and Trap cards (34), with purity at 38%

Critical choke points

• Rainbow Bridge and Crystal Bond as the sole search and engine routes
• Ultimate Crystal Rainbow Dragon Overdrive is reached only through the Ultimate Crystal summon chain

Recommended changes

Evidence & confidence

• Verified: Four Forbidden Extra Deck cards at one copy each (Forbidden, legal_copies 0); Main 54, Extra 15, Side 0 are within OCG size rules; Limited and Semi-Limited copy counts are respected; Archetype-core usage stat: Crystal Beast Sapphire Pegasus, Crystal Bond and Rainbow Bridge at 75% inclusion
• Inferred: Starter access (0.763 core, 0.897 searcher) from hypergeometric draws; Brick and interaction reads from card text; Midrange primary strategy from composition and engine text
• Provisional: Meta Power (no dated metagame sample); Format fit and matchup coverage (no tournament link)
• Data gaps: no combos supplied, so combo floor, median and ceiling are text-only inference no tournament link, so archetype meta-share and per-pilot record are absent no win-rate telemetry in YGOVN for this deck Meta Power is Provisional without a dated metagame sample No Side Deck present (side_count 0)