Legendary Sword
Spell Equip

Legendary Sword

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Equip only to a Warrior monster. It gains 300 ATK/DEF.




 
 
AI Power Analysis
UtilityConfidence: MediumEvaluated Oct 9, 2026
38± 8/ 100
Power Score
Intrinsic 37
Deck 38

Legendary Sword — Power Evaluation

Final Score: 38 ± 8 · Confidence: Medium

  • Intrinsic: 37 · Deck: 38 · Meta: provisional
  • Primary role: Utility

Why it scores here

Legendary Sword is a plain equip spell: it gives a Warrior monster +300 ATK/DEF and nothing else. It does not search, refuel, interact, or become material, so the score comes from its modest stat boost and the fact that it sees steady use across 19 decks in 12 archetypes at about 1.5 copies. The 300 ATK/DEF and the high view count earn nothing by themselves, and the Warrior-only restriction caps its value.

Axis scores

Axis Score Evidence
Accessibility 45 Drawn like any spell with no searcher or combo evidence, and it is live in 19 decks at about 1.5 copies, which is a practical deck-level add (observed, with the draw route inferred).
Combo & Conversion 30 Only converts a Warrior into a 300-point stat gain; no combo data supports a larger board (verified from text, combos absent).
Resource Economy 35 Trades one card for a small, non-repeatable stat increase with no card advantage or GY recovery stated in the text (verified).
Effect & Interaction 5 No negation, removal, or disruption in its text (verified).
Material Utility 5 A spell card that cannot be used as material and provides no body of its own (verified).
Resilience & Flexibility 25 Its value depends on the equipped Warrior staying on field, and it has no recovery or redundancy clause (inferred).
Deck-Building Efficiency 45 Single-copy slot cost with a mild Warrior-only restriction and no garnet or lock text (verified text, observed copy count).

Calculation

Weight profile: Utility / no clear role (default); no secondary role. Intrinsic ≈ 37, Deck ≈ 38, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck

Strengths

  • +300 ATK/DEF is a cheap, low-risk stat boost for a Warrior monster (verified)
  • Used in 19 recent decks across 12 archetypes at about 1.5 copies, so it is a practical, portable add (observed)

Weaknesses

  • Warrior-only restriction; it has no value when no Warrior is on the field (verified)
  • No card advantage, interaction, or body of its own (verified)
  • Its value depends entirely on the equipped monster remaining on field (inferred)

Counters / choke points

  • Destruction or removal of the equipped Warrior monster (inferred)
  • Removal of the equip spell itself (inferred)

Best use

Single-copy Warrior stat support in decks that run Warrior monsters. Decks: Hole, Book Of, Dark Magician. Suggested copies: 1.

Evidence & gaps

  • Verified: Card text: equip only to a Warrior monster; it gains 300 ATK/DEF; No searcher, refuel, negation, or material text on the card
  • Observed: Appears in 19 decks at an average of 1.53 copies across 12 archetypes; Usage statistics show 100% inclusion at 1 typical copy in 3 archetypes (consistency, not power; not used to raise the score)
  • Inferred: Accessibility is ordinary spell draw with no searcher route; The Warrior restriction limits the card to Warrior-heavy homes
  • Data gaps: No combos supplied; combo conversion and starter/material roles are text-only inference No guides supplied No banlist token; assumed 3 copies (unlimited) No ruling for what happens to the equip when the equipped monster leaves the field











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