Crystal Beast Deck #710442 — Yu-Gi-Oh! OCG
40 Main, 5 Extra, incl. Crystal Beast Sapphire Pegasus x3, Crystal Master x3, Ancient City - Rainbow Ruins x3. Created May 31, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 05/31/2026
Main Deck (40)
- Crystal Beast Amber Mammoth x2
- Crystal Beast Amethyst Cat x1
- Crystal Beast Cobalt Eagle x1
- Crystal Beast Emerald Tortoise x1
- Crystal Beast Rainbow Dragon x2
- Crystal Beast Ruby Carbuncle x2
- Crystal Beast Sapphire Pegasus x3
- Crystal Beast Topaz Tiger x2
- Rainbow Dragon x1
- Crystal Master x3
- Ancient City - Rainbow Ruins x3
- Awakening of the Crystal Ultimates x3
- Crystal Abundance x1
- Crystal Bond x3
- Crystal Promise x3
- Golden Rule x2
- Rainbow Bridge x3
- Rainbow Bridge of the Heart x2
- Crystal Miracle x2
Extra Deck (5)
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 54 |
| Going First | 58 |
| Going Second | 42 |
| Meta Power | provisional |
| Tournament Reliability | 50 |
- Primary strategy: Midrange
- Secondary strategies: Combo, Toolbox
- Format: ocg
Legality
Main 40 / Extra 5 / Side 0 — status: Illegal. 2 violation(s).
Identity & game plan
- Win condition: Crystal Beast board built through Rainbow Bridge / Crystal Bond searches and the Ultimate Crystal fusion line into Rainbow Overdragon, Rainbow Dragon or Rainbow Dragon Overdrive (4000 ATK); Crystal Beast recursion from the Spell and Trap Zone (face-down continuous placements) to rebuild the board after removal
- Turn 1 (going first): Turn 1 search (Rainbow Bridge or Crystal Bond) into a Crystal Beast engine, then Sapphire Pegasus / Crystal Promise to place a Crystal Beast into the Spell and Trap Zone and build toward the Rainbow Dragon line
- Turn 2 (going second): Hold Crystal Miracle and Crystal Beast monsters for protection and recursion; no hand traps or floodgates, so the second-player plan depends on board-level negation and recovery
- Recovery: Crystal Beast monsters that were destroyed in a Monster Zone return face-up to the Spell and Trap Zone as Continuous Spells, and Rainbow Bridge / Crystal Bond re-search the next engine piece
- After siding: Not evaluable: the deck runs no Side Deck (0 cards), so there is no post-side plan
Why it scores here
The Crystal Beast core (18 copies, roughly 96% chance of at least one in a 5-card opening hand per the hypergeometric proxy) and 16 searcher-text cards give this list a dependable engine start, which drives the consistency score. Its route into the Ultimate Crystal fusion finishers (three 4000-ATK Rainbow dragon bodies) and its recursion from the Spell and Trap Zone let the deck convert and rebuild after a single removal, although no recorded boards exist to confirm the realised output. Interaction is limited to removal and negation text, with no hand traps or floodgates, so the going-second score is weak. The score comes from the system (engine access, recursion, closing bodies and efficiency), not from averaging card scores, and the archetype's popularity earned no points. The deck is Illegal in OCG because it runs two Forbidden cards, so the normal final formula is capped and the result is structural only.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 70 | P(at least one core Crystal Beast in opening hand) about 0.96; 16 searcher-text cards; 2-card bootstrap via Rainbow Bridge plus Crystal Promise (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 62 | Dense Crystal Beast core with a 22-card Level 0 spell count and no hand traps; some redundancy but occasional dead Spell and Trap copies (Inferred) |
| D3 | Combo Conversion & Ceiling | 60 | Ceiling set by the Ultimate Crystal fusion into 4000-ATK bodies; no recorded combo boards to confirm (Inferred, text-based) |
| D4 | Combo Floor & Median Output | 45 | No recorded boards, so median output is unmeasured and the score is a text-based estimate (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 62 | Crystal Miracle, Ancient City and monster recursion give independent routes after disruption (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 60 | Searchers and recursion from the Spell and Trap Zone sustain resource use across turns (Inferred) |
| D7 | End-Board & Interaction Quality | 50 | Negation text 7 and removal text 12, but no hand traps or floodgates; Crystal Miracle is the main on-board protection (Inferred semantic) |
| D8 | Going-Second & Board-Breaking Power | 35 | No hand traps or floodgates; going-second interaction depends on board-level effects only (Inferred) |
| D9 | Offensive Pressure & Closing Power | 65 | Three 4000-ATK bodies and direct-damage text (Inferred from card text) |
| D10 | Main Deck Efficiency & Flexibility | 60 | 40-card Main Deck, 19 distinct cards, 64.4% exact archetype purity with related Crystal sub-archetypes (Observed composition) |
| D11 | Extra Deck Efficiency & Coverage | 45 | Five Extra Deck cards with Rainbow dragon coverage, but two of them are Forbidden (Verified) |
| D12 | Side Deck Adaptability | 10 | No Side Deck cards at all (Verified) |
| D13 | Matchup Coverage & Format Fit | 45 | No tournament link and no dated meta sample; archetype share unavailable (Provisional) |
| D14 | Pilotability & Error Tolerance | 45 | Several multi-step Crystal Beast placements and fusion requirements raise the decision load (Inferred) |
How the score was computed
Strategy profile: Midrange primary, Combo secondary (about 80/20 by judgement). Structural ≈ 54, Going First ≈ 58, Going Second ≈ 42, Meta = provisional, Tournament Reliability ≈ 50. Modifiers: banlist_exposure (-10); illegal_list_cap (-13). Final formula: No reliable metagame: 0.80*Structural(54) + 0.20*TournamentReliability(50) = 53.2, then context modifiers (-10) = 43, then capped to 30 because the list is Illegal (theoretical/structural only)
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.96 · key two-card combo ≈ — · full-brick estimate ≈ 0.04 (all Inferred)
- Combo output: best PowerIndex —, median —, board-per-starter —
- Turn order: 0 going-first lines vs 0 going-second lines
Strengths
- Dependable Crystal Beast engine access (18 core copies, 16 searchers)
- Recursion from the Spell and Trap Zone gives repeatable board presence
- Three 4000-ATK finishers reachable through the Ultimate Crystal line
Weaknesses
- Two Forbidden cards make the list Illegal in OCG
- No hand traps or floodgates, so weak going-second interaction
- No Side Deck, so no post-side adaptation
- No recorded combos, so the realised floor and median are unknown
Critical choke points
- Ultimate Crystal monster access for the fusion finishers
- Crystal Beast monsters on the field as the base of nearly every line
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Number 60: Dugares the Timeless | A legal Crystal Beast or Crystal-archetype card (or a second copy of an existing engine piece) | Forbidden in OCG; removing it is required before the list can receive a normal score |
| 2 | Saryuja Skull Dread | A legal Link monster or a Crystal Beast-compatible Extra Deck card | Forbidden in OCG; removing it is required before the list can receive a normal score |
| 3 | One low-impact Spell or Trap copy | A hand trap or a Side Deck of 15 cards | Adds going-second interaction and post-side adaptability, both currently missing |
Evidence & confidence
- Verified: Two Forbidden cards (Number 60, Saryuja Skull Dread) in the list, copy limit 0 in OCG; Main 40, Extra 5, Side 0 within OCG size rules; Archetype purity 64.4% exact name
- Inferred: Opening-hand starter access about 0.96 for the core group; Going-second weakness from the absence of hand traps; Interaction quality from card text (negation 7, removal 12)
- Provisional: Meta and matchup standing (no dated 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 No win-rate telemetry for going-first/second, matchup or brick rates Meta Power is Provisional unless a dated metagame sample is supplied
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