Royal Decree
Trap Continuous

Royal Decree

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Negate all other Trap effects on the field.




 
 
AI Power Analysis
Floodgate/ControlConfidence: MediumEvaluated Oct 5, 2026
65± 5/ 100
Power Score
Intrinsic 64
Deck 66

Royal Decree — Power Evaluation

Final Score: 65 ± 5 · Confidence: Medium

  • Intrinsic: 64 · Deck: 66 · Meta: provisional
  • Primary role: Floodgate/Control · Secondary: Negation/Interaction

Why it scores here

Royal Decree is a generic, splashable trap floodgate that appears across 85 distinct archetypes at 2–3 copies per deck, confirming strong accessibility and deckbuilding efficiency. Its continuous negation of all opponent trap effects provides hard, format-agnostic disruption effective against trap-heavy strategies, but offers zero combo value or material utility and its effectiveness is conditional on opponents running traps. The score reflects its role as a pure control tool: reliable and widely applicable, but dependent on game state and vulnerable to spell/monster removal.

Axis scores

Axis Score Evidence
Accessibility 65 Standard 2–3 copy inclusion across 400 decks in 85 distinct archetypes confirms high reliability; however, as a trap it requires setup and is less immediately live than hand traps (verified from deck data copies per deck distribution).
Combo & Conversion 5 Zero appearances across any combo record confirms this card generates no board-building synergy and cannot advance your own state (verified from combo data total combos=0).
Resource Economy 50 The card is resource-neutral with no card advantage or refuel, but provides repeated negation across multiple turns once deployed; cost-to-benefit is break-even (inferred from continuous trap mechanics and card text).
Effect & Interaction 72 Hard negation of all opponent trap effects gives a score of 72; this is strong, flexible disruption, but effectiveness is conditional on opponents running traps and does not interact with spells or monsters (verified from card description and guides showing use in control-focused decks).
Material Utility 0 Traps cannot serve as Synchro, Fusion, Link, or XYZ material; zero value regardless of field state (verified from trap card mechanics).
Resilience & Flexibility 60 Once deployed, the continuous effect persists across turns; however, the card is vulnerable to spell destruction (MST, Heavy Storm) and monster removal effects (observed from top partners data showing Heavy Storm and MST at 52–55% co-deck rate).
Deck-Building Efficiency 75 Minimal deck-building cost with no engine requirement and splashable across 85 archetypes at 2–3 copies with no brick risk; this is a free-roll staple tech (verified from distinct archetypes=85 and copies per deck avg=2.32).

Calculation

Weight profile: 0.7 Floodgate/Control + 0.3 Negation/Interaction. Intrinsic ≈ 64, Deck ≈ 66, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

  • Generic floodgate with zero deck-building restrictions
  • Splashable across 85 distinct archetypes with standardized 2–3 copy consistency
  • Hard negation of all opponent trap effects; highly effective against trap-heavy strategies
  • Continuous effect remains active across multiple turns once deployed
  • Synergizes well with other trap/removal staples (Heavy Storm, Mirror Force)

Weaknesses

  • Zero combo potential and does not advance your own board state
  • Vulnerable to spell destruction (MST, Heavy Storm) and monster-based backrow interaction
  • Effectiveness is conditional on opponent running traps; near-blank card against trap-light decks
  • As a trap, inherently slower than hand traps and requires setup time before first activation
  • Provides no card advantage, refuel, or material utility

Counters / choke points

  • Spell cards that destroy backrow (Heavy Storm, Mystical Space Typhoon, Harpie's Feather Duster)
  • Monster effects that destroy or interacts with Continuous Traps
  • Opponent trap negation/destruction effects
  • Decks relying primarily on spells and monsters rather than trap effects

Best use

Floodgate tech to passively deny all opponent trap effects. Decks: Control-focused decks, Going-second strategies, Decks using other trap disruption (e.g., Labrynth, Altergeist, pure Trap-focused builds).

Evidence & gaps

  • Verified: Card text: 'Negate all other Trap effects on the field' (Continuous Trap effect); Trap type, no archetype (generic); Running in 400 decks across 85 distinct archetypes; Average 2.32 copies per deck; distribution: 1 copy (12%), 2 copies (44%), 3 copies (44%); 82.8% of decks are control/going-second gameplay (format=7); 100% inclusion in Ally of Justice per StatisticsCard table
  • Observed: Most common partners are trap/removal staples: Heavy Storm (55.2%), Mirror Force (52.8%), MST (52.8%); Guides reference it in Tech/Engine sections alongside Ash Blossom, Infinite Impermanence, Called by the Grave; Consistently included across control and going-second strategies
  • Inferred: Primary role is Floodgate/Control based on continuous negation of all opponent trap effects; Secondary role is Negation/Interaction based on hard negation mechanics; Strong deck synergy with other trap/removal staples (Heavy Storm and Mirror Force package); High accessibility due to standardized 2–3 copy inclusion across archetypes with no searching or tutoring required
  • Data gaps: No combo data supplied — combo conversion score is text-based inference only No banlist token in evidence — assumed unlimited; actual TCG/OCG/MasterDuel restrictions should be verified against official banlist Usage statistics only provide StatisticsCard data for Ally of Justice; coverage for other 84 archetypes missing











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