Spell
FieldWorld of Spirits
Archetype:
Ancient Fairy Dragon
View:
1911
When this card is activated: You can add 1 monster that mentions "Ancient Fairy Dragon" from your Deck to your hand. You can only activate the following effects while you control a Level 7 or higher LIGHT Dragon Synchro Monster. Each time a monster(s) is Special Summoned in Attack Position: Change it to Defense Position. Once per turn, during the End Phase: Destroy all Attack Position monsters on the turn player's field. You can only activate 1 "World of Spirits" per turn.
World of Spirits — Power Evaluation
Final Score: 53 ± 8 · Confidence: Medium
- Intrinsic: 49 · Deck: 55 · Meta: provisional
- Primary role: Searcher/Tutor · Secondary: Floodgate/Control
Why it scores here
World of Spirits is a field spell whose reliable value is its on-activation search for one monster that mentions Ancient Fairy Dragon, which is a card-for-card conversion that keeps the card live in the decks that run it (164 sampled decks, 82% in gameplay type 7). Its board-control half (forcing monsters into Defense Position and destroying attack-position monsters during the End Phase) is gated behind controlling a Level 7+ LIGHT Dragon Synchro, and it is limited to one activation per turn, so it does not convert reliably on its own. The Level 7 Dragon Synchro material requirement and the field-spell removal exposure keep resilience and effect scores modest, and high deck inclusion was not counted as power (guardrail 3). No combo data was supplied, so conversion is text-based inference.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 65 | Searches one archetype monster on activation and appears in 164 sampled decks with strong partners such as Ash Blossom at 92% co-occurrence, so it is usually live (observed, inferred for the search route). |
| Combo & Conversion | 45 | No combo boards were supplied, so the conversion of the search into a board is inferred from text alone and the conditional End Phase wipe is not confirmed in practice (inferred). |
| Resource Economy | 45 | The on-activation search is card-for-card (spend the spell, gain one monster) with no refuel or net advantage shown in the evidence (verified text, inferred net value). |
| Effect & Interaction | 50 | The Defense Position change and the End Phase destruction of attack-position monsters are strong when active, but both need a level 7+ LIGHT Dragon Synchro and the wipe is limited to one use per turn (verified text). |
| Material Utility | 5 | A field spell has no material or level value, so it contributes nothing here (verified text). |
| Resilience & Flexibility | 40 | It sits as a field spell that can be destroyed by standard field removal, and its control effects depend on a single Synchro condition (inferred from text). |
| Deck-Building Efficiency | 60 | Typically one copy (distribution 118 of 164 decks at 1 copy) with no garnet or lock beyond the Synchro condition, but it is archetype-specific and the wipe is dead without that Synchro (observed, inferred). |
Calculation
Weight profile: 0.7 Searcher/Tutor + 0.3 Floodgate/Control. Intrinsic ≈ 49, Deck ≈ 55, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Searches one Ancient Fairy Dragon archetype monster on activation, so it is reliably live in the decks that run it
- Broad archetype reach across 43 distinct archetypes in the sample, with a 1-copy default
- When the Level 7+ LIGHT Dragon Synchro condition is met, it can force Defense Position and wipe attack-position monsters during the End Phase
Weaknesses
- The board-control effects are gated on controlling a Level 7+ LIGHT Dragon Synchro
- Limited to one activation per turn, and the End Phase wipe also hits monsters on the turn player's own field
- Contributes no material value and is a card-for-card search with no net advantage
- Field spell can be removed by standard field removal, so the control effects can be lost
Counters / choke points
- Field spell removal or destruction
- Ash Blossom & Joyous Spring is a partner in the deck sample, which suggests it is commonly played alongside this card rather than countered by it (observed)
Best use
Searcher/Tutor for Ancient Fairy Dragon monsters, with conditional Floodgate-style board control once a level 7+ LIGHT Dragon Synchro is out. Decks: Blue-Eyes, Yummy, Sky Striker, Fairy Tail, Synchron, Crimson Dragon. Suggested copies: 1.
Evidence & gaps
- Verified: On activation, adds one monster that mentions Ancient Fairy Dragon from the Deck to hand (card text); Defense Position change and End Phase destruction are gated on a level 7+ LIGHT Dragon Synchro and once per turn (card text); Appears in 164 sampled decks, 1 copy in 118 of them (decks evidence)
- Observed: 82.3% of sampled decks use gameplay type 7 (decks evidence); Ash Blossom & Joyous Spring co-occurs in 92.1% of decks running this card (decks evidence)
- Inferred: Primary role is Searcher/Tutor because the search is the on-activation effect; the control effects are secondary (text); Search keeps the card live in practice, but no combo boards confirm the route (text plus deck partners); Standard field removal can strip the control effects (rules reasoning)
- 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 legal_copies is empty - format legality not confirmed beyond the listed formats