LIGHT
4Heliosphere Dragon
ATK:
0
DEF:
1900
View:
3710
While your opponent has 4 or less cards in their hand and this card is the only monster you control, your opponent cannot declare an attack. Once per turn, if you control a Level 8 Dragon-Type monster: You can make this card become Level 8 until the end of this turn.
Heliosphere Dragon — Power Evaluation
Final Score: 46 ± 8 · Confidence: Medium
- Intrinsic: 47.6 · Deck: 45.3 · Meta: provisional
- Primary role: Floodgate / Control · Secondary: Extender
Why it scores here
Heliosphere Dragon's power is a conditional attack lock: the opponent cannot attack while they hold 4 or fewer cards and this is the only monster you control. The level-change clause is a secondary, conditional extender that needs your own Level 8 Dragon. Its 83-deck presence across 31 archetypes is used only to confirm it is a real, playable slot and to lift accessibility and deck fit, not to raise the score. The 1900 DEF and 0 ATK earn nothing, and the absence of combo evidence keeps combo conversion and resource economy low.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 55 | Level 4 LIGHT Dragon played in 83 sampled decks across 31 archetypes at mostly one copy, but the evidence has no searcher or starter counts to show how reliably it reaches the field (observed for deck count, inferred for reach). |
| Combo & Conversion | 20 | No recorded combo boards exist, so the card is scored only from its text; it builds no extra board or body on its own (inferred). |
| Resource Economy | 10 | The text has no draw, search, banish-refuel or card-advantage clause, so the score stays near zero (verified). |
| Effect & Interaction | 45 | The attack lock is a soft, condition-gated restriction rather than removal or negation, and it only holds while the opponent has 4 or fewer cards and you control no other monster (verified). |
| Material Utility | 40 | It is a Level 4 body that can become Level 8 once per turn, which gives modest material value, but the evidence has no material counts (inferred). |
| Resilience & Flexibility | 35 | The lock is switched off by any second monster you control or by the opponent holding 5 or more cards, and the 1900 DEF body is the only durable part (verified for conditions, inferred for DEF value). |
| Deck-Building Efficiency | 75 | It is a single-copy slot with no garnet, brick or self-lock beyond its own board condition, so it is cheap to run (observed: 79 of 83 decks run one copy). |
Calculation
Weight profile: 0.7 Floodgate/Control + 0.3 Extender. Intrinsic ≈ 47.6, Deck ≈ 45.3, Meta = provisional. Modifiers: Self-locking restriction (-2). Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Conditional attack lock that is cheap to run at one copy
- Widely slotted across 31 archetypes, so the card is portable
- Fits Dragon-based lines through a Level 8 Dragon requirement
Weaknesses
- The lock turns off with any second monster on your side or with the opponent holding 5 or more cards
- No recorded combo or searcher evidence showing reliable access
- 0 ATK and 1900 DEF give little board or pressure value
- The level-change clause depends on another Level 8 Dragon being present
Counters / choke points
- The opponent holding 5 or more cards in hand disables the lock (inferred from the text)
- Adding a second monster to your field disables the lock (inferred from the text)
- Removing or bouncing this card removes the lock (inferred from the text)
Best use
Single-copy attack-lock floodgate on a Level 4 body, with an optional Level 8 switch when a Level 8 Dragon is present. Decks: Tenpai Dragon, Sangen, Galaxy Photon. Suggested copies: 1.
Evidence & gaps
- Verified: Attack lock applies while the opponent has 4 or fewer cards in hand and this is the only monster you control; Once per turn, if you control a Level 8 Dragon-Type monster, this card can become Level 8 until end of turn; The card is Level 4, LIGHT, Dragon, Effect Monster, with 0 ATK and 1900 DEF; 79 of 83 sampled decks run one copy
- Observed: The card appears in 83 sampled decks across 31 archetypes and two main gameplay types; Hieratic Seal of the Heavenly Spheres co-occurs in 80.7% of those decks; Bystial Magnamhut co-occurs in 72.3% of those decks
- Inferred: The card is a soft floodgate rather than removal or negation; The lock is most useful when the opponent has few cards in hand and you have no other monsters; Its Level 4 body gives modest material value
- Data gaps: no combos supplied; combo conversion is text-only inference no searcher or starter evidence; accessibility is inferred from deck presence no usage statistics (StatisticsCard); archetype inclusion is inferred from the deck sample only average starter count when present is null, so deck resilience is inferred no banlist token; assumed 3 copies (unlimited) no measured frequency of the Level 8 Dragon requirement being met