Gren Maju Deck #730663 — Yu-Gi-Oh! Master Duel
40 Main, incl. Aloof Lupine x3, Gren Maju Da Eiza x3, Metaphys Daedalus x3. Created Jul 7, 2026 by YGO Mod.
Created by: YGO Mod (20517634)
Created On: 07/07/2026
Main Deck (40)
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Gren Maju — Deck Power Evaluation
Final Contextual Deck Power: 25/100 (±5 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 52 |
| Going First | 45 |
| Going Second | 30 |
| Meta Power | provisional |
| Tournament Reliability | 30 |
- Primary strategy: Blind-Second / OTK
- Secondary strategies: Stun
- Format: master-duel
Legality
Main 40 / Extra 0 / Side 0 — status under the rules at evaluation time: Illegal. 2 violation(s).
Identity & game plan
- Win condition: Banish cards to inflate Gren Maju Da Eiza ATK for OTK; Floodgate lock with Macro Cosmos / Dimensional Fissure
- Turn 1 (going first): Set continuous floodgates and banish Metaphys monsters to build board presence
- Turn 2 (going second): Attempt rapid OTK using Gren Maju boosted by banished count
- Recovery: Metaphys Standby Phase shuffle-back and Asymmetaphys draws
- After siding: None (empty side deck)
Why it scores here
This Gren Maju / Metaphys banish deck is evaluated as Illegal because it runs three copies each of Pot of Desires and Pot of Duality where Master Duel limits them to one, so the Final Contextual score is capped low as a theoretical structural read only. The system shows cohesive banish synergy: high copy density of core cards (P≥1 searcher group ≈0.85 Inferred) feeds Gren Maju ATK and Metaphys board presence, giving moderate consistency and OTK ceiling. However the deck lacks hand traps, negation, and an Extra Deck, and its going-second board-breaking is weak, so even a legal version would not be top-tier. The score is derived from system consistency, median output, and interaction layers, not from archetype popularity or averaged card scores, and the illegality prevents any normal competitive rating.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 70 | Searcher-text group 12 copies yields P(≥1 in 5)≈0.85 from hypergeometric (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 65 | Copy histogram shows 12 cards at 3x reducing brick chance, but floodgates can be dead going second (Inferred) |
| D3 | Combo Conversion & Ceiling | 60 | Metaphys bosses plus Gren Maju scaling suggest moderate ceiling, but no parsed boards (Inferred) |
| D4 | Combo Floor & Median Output | 50 | No combo records; median output assumed modest due to setup needs (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 45 | Limited negation and reliance on banish removal; some Metaphys recursion exists (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 55 | Pot of Desires banish 10 hurts deck thinning; Asymmetaphys draws mitigate (Inferred) |
| D7 | End-Board & Interaction Quality | 40 | Floodgates present but zero negation text; interaction density low (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 30 | No extra deck and few board breakers; going second weakened by own floodgates (Inferred) |
| D9 | Offensive Pressure & Closing Power | 70 | Gren Maju ATK = banished×400 enables OTK; guide confirms OTK intent (Observed guide snippet) |
| D10 | Main Deck Efficiency & Flexibility | 60 | 40-card compact archetype core 100% present per usage stats (Verified) |
| D11 | Extra Deck Efficiency & Coverage | 50 | Zero Extra Deck slots used; deck does not require them (Verified) |
| D12 | Side Deck Adaptability | 5 | Side deck empty; no post-side adaptability (Verified) |
| D13 | Matchup Coverage & Format Fit | 50 | No dated metagame sample supplied; matchup fit provisional (Provisional) |
| D14 | Pilotability & Error Tolerance | 70 | Simple banish triggers and few decision points; pilotable (Inferred) |
How the score was computed
Strategy profile: primary only. Structural ≈ 52, Going First ≈ 45, Going Second ≈ 30, Meta = provisional, Tournament Reliability ≈ 30. Modifiers: Illegal copy limit violation (-27). Final formula: Illegal deck: structural capped low; theoretical only = 0.80*Structural(52) + 0.20*TournamentReliability(30) adjusted by illegality penalty to 25
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.85 · 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
- Coherent banish engine with high copy density of core cards
- Floodgates (Macro Cosmos, Dimensional Fissure) disrupt graveyard strategies
- Gren Maju Da Eiza can reach massive ATK for OTK
Weaknesses
- Illegal due to over-limit Pot of Desires and Pot of Duality
- No hand traps, no negation, weak interaction layer
- Zero Extra Deck and empty Side Deck limit flexibility
Critical choke points
- Pot of Desires / Pot of Duality copy limit violation makes deck illegal
- Reliance on floodgates that hinder own going-second plays
- No recursion beyond Metaphys standby effects; vulnerable to banish hate
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | 2x Pot of Desires, 2x Pot of Duality | Legal 1x each plus hand traps (e.g., Ash Blossom) | Restore legality and improve interaction |
| 2 | Small Extra Deck or side cards | Enable best-of-3 adaptability and coverage |
Evidence & confidence
- Verified: Legality status and copy limits; Card text excerpts; Banlist statuses (Limited/Unlimited); Usage statistics core 100% present; Empty side deck count
- Observed: Guide snippet mentions OTK strategy
- Inferred: Hypergeometric consistency from probabilities; Strategy classification from card text; Dimension scores due to missing combos
- Provisional: Matchup format fit (no dated meta)
- Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN Meta Power is Provisional unless a dated metagame sample is supplied
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