Spell
QuickBattle Fusion
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When an attack is declared involving a Fusion Monster you control and an opponent's monster: That monster you control gains ATK equal to the ATK of the opponent's monster, until the end of the Damage Step. You can only activate 1 "Battle Fusion" per turn.
Battle Fusion — Power Evaluation
Final Score: 46 ± 8 · Confidence: Medium
- Intrinsic: 42 · Deck: 49 · Meta: provisional
- Primary role: Utility · Secondary: Board breaker
Why it scores here
Battle Fusion is a one-copy Quick-Play battle trick. Its value is a single-battle ATK boost for a Fusion Monster you control, with no card advantage, no search, and no lasting board. The card is played in 43 sampled decks, mostly alongside Polymerization (69.8% of decks), which confirms it is a live, practical pick in Fusion lines. Its evidence does not show a high-power engine, so the score stays in the middle range.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 45 | Quick-Play that must be drawn; it is in 43 recent decks but has no searcher or starter evidence (observed deck frequency, inferred access). |
| Combo & Conversion | 35 | The effect only swings one battle and needs a Fusion Monster already on the field; no combo boards are recorded (inferred from text). |
| Resource Economy | 25 | A one-for-one spell with no draw, search, or recursion in its text (verified). |
| Effect & Interaction | 30 | Gives no removal or negation; it only wins a battle against an opposing monster (verified from text). |
| Material Utility | 0 | A Spell Card cannot be used as material (verified from card type). |
| Resilience & Flexibility | 35 | Can be negated by common counters and is limited to one activation per turn (verified from text; partner list shows Ash Blossom is common). |
| Deck-Building Efficiency | 70 | Single-copy staple with no garnet or lock restriction (observed from copies distribution, 38 of 43 decks run one copy). |
Calculation
Weight profile: 0.7 Utility + 0.3 Board breaker. Intrinsic ≈ 42, Deck ≈ 49, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Live in 43 sampled decks across 21 archetypes
- Cheap single-copy slot with no restriction
- Converts a Fusion Monster's attack into a won battle
Weaknesses
- Needs a Fusion Monster already on the field
- No card advantage, search, or recursion
- Only one battle per turn, no lasting board impact
Counters / choke points
- Ash Blossom & Joyous Spring (observed as a common partner, which also implies it is a common counter in these decks)
- Mirror Force (observed as a partner, indicating the opponent's trap interaction is an active risk)
Best use
Battle-step finisher or combat trick alongside Polymerization. Decks: Fusion-based decks such as Shaddoll, Heroic, Cyber Dragon, and Red-Eyes. Suggested copies: 1.
Evidence & gaps
- Verified: Quick-Play Spell that boosts a Fusion Monster's ATK in battle, once per turn (card text); Single-copy in 38 of 43 decks (deck copies distribution)
- Observed: Present in 43 recent decks across 21 archetypes (deck evidence); Polymerization in 69.8% of decks (partner evidence)
- Inferred: Practical value is a battle-step finisher, not a board engine (text-based inference); Vulnerable to common counters based on partner frequency (inference)
- Data gaps: no combos supplied — combo conversion is text-only inference no guides supplied no banlist token — assumed 3 copies (unlimited) no usage statistics (StatisticsCard) — archetype inclusion % inferred from deck sample only






