Spell
NormalHero Heart
Archetype:
Elemental HERO
View:
3500
Target 1 face-up "Elemental HERO" monster you control; halve its ATK until the end of this turn, but it can attack twice during this turn's Battle Phase.
Hero Heart — Power Evaluation
Final Score: 38 ± 8 · Confidence: Medium
- Intrinsic: 37 · Deck: 39 · Meta: provisional
- Primary role: Utility
Why it scores here
Hero Heart is a single-target Spell that halves one face-up Elemental HERO's ATK for the turn in exchange for a second attack in the Battle Phase, so its value is a conditional extra attack rather than a board or card-advantage engine. It needs a live HERO monster to do anything, which caps accessibility and resilience even though it is played in all 6 sampled decks. The high ATK and attack-count text earn no points on their own, and the absence of combo and guide evidence keeps the score moderate and the band wide.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 40 | Played in 6 of 6 sampled decks at 1 copy each, but it is a dead card without a face-up Elemental HERO and no searcher or starter route appears in the evidence (observed; deck count only, no combo starter data). |
| Combo & Conversion | 40 | Text gives one extra attack to one HERO at the cost of halving its ATK, which converts into modest damage pressure but no board creation (inferred from card text). |
| Resource Economy | 25 | Spends a card and halves an ATK with no draw, search, or recursion, so net card advantage is negative (verified from card text). |
| Effect & Interaction | 5 | No negation, removal, or disruption on the card (verified from card text). |
| Material Utility | 5 | A Spell card cannot be used as Fusion, Synchro, Xyz, or Link material, so it provides no material value (verified from card text and frame type). |
| Resilience & Flexibility | 30 | Depends on one face-up HERO staying on the field and has no backup line, so one interaction in response can fizzle it (inferred from card text). |
| Deck-Building Efficiency | 70 | Single copy, no garnet or lock, and splashable across HERO and Fusion shells, but it still occupies a main-deck slot (observed from deck copies, 1 per deck). |
Calculation
Weight profile: Utility default (no clear role); no secondary role blend. Intrinsic ≈ 37, Deck ≈ 39, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Playable in every sampled Elemental HERO list at one copy with no restriction
- Grants a second attack to a HERO monster without requiring a second card
- Clean, unambiguous timing from the card text
Weaknesses
- Dead without a face-up Elemental HERO on the field
- Halves ATK, a real cost that gives no card advantage in return
- No interaction or negation value
Counters / choke points
- Monster removal or ATK-redirect effects that remove the target before resolution
- Any interaction that negates the Spell in response
Best use
Utility: extra Battle Phase attack on a HERO monster. Decks: Elemental HERO. Suggested copies: 1.
Evidence & gaps
- Verified: Card text: halve ATK of one face-up Elemental HERO until end of turn, and it can attack twice in the Battle Phase; Spell card cannot be material; Single copy per deck across 6 decks
- Observed: Appears in 6 of 6 sampled decks; Co-occurs at 100% with Necroshade and Oversoul; Heroic archetype present in 2 decks
- Inferred: Needs a face-up Elemental HERO and so has no opening-hand value; Extra attack gives modest pressure rather than board creation; Presence in HERO decks reflects archetype fit more than power (guardrail 3)
- 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 Archetype label on 3 of 6 decks reads as no archetype, so archetype-home signal is thin