Trap
NormalBattle Instinct
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2615
Activate only when your opponent declares a direct attack and you control no monsters. Special Summon 1 Level 4 or lower Beast-Type monster from your hand, in face-up Attack Position.
Battle Instinct — Power Evaluation
Final Score: 40 ± 8 · Confidence: Medium
- Intrinsic: 40 · Deck: 40 · Meta: provisional
- Primary role: Utility
Why it scores here
Battle Instinct is a conditional defensive trap: it converts one card in hand into one Level 4-or-lower Beast body, but only when the opponent declares a direct attack and you control no monsters. That is a narrow window, so the card scores as a niche body generator rather than a strong play. Its cost is cheap and it runs one copy with no garnets, which keeps the deck score near the middle; its Melffy and Tri-Brigade homes confirm it is playable, not that it is powerful. The narrative does not credit the card's text as high-impact interaction, and the 4-deck sample gives no evidence of conversion strength.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 35 | The trap needs an empty field and an opponent direct attack, so it is live only in a specific window; no combo or searcher data confirms routes (inferred, text-based). |
| Combo & Conversion | 20 | Text gives one Special Summon from hand; no recorded boards show it as a starter, payoff, or converter (inferred from text, no combo data). |
| Resource Economy | 30 | One card in hand becomes one body, so the exchange is roughly even with no refuel or advantage (inferred from text). |
| Effect & Interaction | 25 | It summons a monster rather than negating or removing anything, so opponent interaction is minimal (verified from text). |
| Material Utility | 30 | A Beast of Level 4 or lower is a usable material, but the card gives no material value on its own (inferred from text and rules). |
| Resilience & Flexibility | 30 | It is a trap that can be negated, and its condition is narrow, so there is little redundancy (inferred from text). |
| Deck-Building Efficiency | 80 | Single copy, no garnets or locks, and a generic Beast requirement make it cheap to run (verified from deck evidence: 4 of 4 decks run 1 copy). |
Calculation
Weight profile: Utility / no clear role (default), no secondary blend. Intrinsic ≈ 40, Deck ≈ 40, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Cheap, single-copy inclusion with no garnet or lock cost
- Live in Melffy and Tri-Brigade shells, so the role is real rather than theoretical
- Converts a dead trap into a Level 4-or-lower body when an opponent direct attack lands
Weaknesses
- Requires an empty field and an opponent direct attack, which are narrow conditions
- No interaction beyond a body; it does not stop the attack or any card
- Sample is 4 decks in one gameplay, so the partner list reflects a tiny sample
Counters / choke points
- Any opponent play that keeps a monster on your field blocks the activation
- Negation of the trap before resolution removes the body
Best use
Utility. Decks: Melffy, Tri-Brigade. Suggested copies: 1.
Evidence & gaps
- Verified: Card text: activates only on opponent direct attack with no monsters controlled, Special Summons one Level 4 or lower Beast from hand; 4 of 4 sampled decks run exactly 1 copy in gameplay type 4; Two archetypes (Melffy, Tri-Brigade) in the deck sample
- Observed: Partner cards co-occur in 4 of 4 sampled decks (small sample)
- Inferred: Accessibility is low because the activation window is narrow; Resource economy is roughly even (1 card to 1 body); Deck resilience is moderate given two archetypes and no starter-count data
- Data gaps: no combos supplied, so combo conversion is text-only inference no guides supplied no banlist token, assumed 3 copies (unlimited) no usage statistics (StatisticsCard), so archetype inclusion % is inferred from the 4-deck sample only deck sample is 4 decks in a single gameplay type, so co-occurrence percentages are not statistically meaningful