Spell
NormalBook of Taiyou
Archetype:
Book of
View:
4007
Flip 1 face-down monster on the field into face-up Attack Position.
Book of Taiyou — Power Evaluation
Final Score: 50 ± 7 · Confidence: Medium
- Intrinsic: 48.6 · Deck: 50.6 · Meta: provisional
- Primary role: Utility
Why it scores here
Book of Taiyou is a cheap Normal Spell that is run reliably: 213 recent decks across 51 archetypes, usually at 1 to 3 copies, with no garnet or lock cost. Its effect only converts when a face-down monster exists, flipping it to face-up Attack Position. It builds no board, refuels nothing, and does not affect face-up cards, so its score stays in the mid-range. The high deck count is partly causal: 61.5% of its decks also run Book of Moon, so the frequency reflects a shared package more than intrinsic power (guardrail 3). No combo data exists, so combo conversion rests on the card text alone.
Axis scores
| Axis | Score | Evidence |
|---|---|---|
| Accessibility | 70 | Normal Spell with 1.6 average copies across 213 decks; always live when drawn, but only useful against a face-down monster (observed). |
| Combo & Conversion | 30 | Text-only: the effect flips one face-down monster and creates no further steps, with no combo boards recorded (inferred). |
| Resource Economy | 25 | A one-for-one spell with no search, draw, or GY refuel; it gives no card advantage (verified). |
| Effect & Interaction | 35 | Forces a face-down monster into attack position, a narrow soft interaction that needs an opposing set monster (inferred). |
| Material Utility | 5 | A Spell card cannot be used as material, so this axis is near zero by definition (verified). |
| Resilience & Flexibility | 35 | A plain Spell with no recursion or multi-zone presence; one spell negation ends it (inferred). |
| Deck-Building Efficiency | 85 | Cheap to run, splashable in principle, with 3-of usage in 53 decks and no garnet or brick restriction (observed). |
Calculation
Weight profile: Utility default (no secondary blend). Intrinsic ≈ 48.6, Deck ≈ 50.6, Meta = provisional. Modifiers: none. Final formula: 0.40*Intrinsic + 0.60*Deck
Strengths
- Cheap, redundant Normal Spell that is run reliably: 213 decks, 3-of in 53
- Broad portability: 51 distinct archetypes
- Clean, unambiguous text with no timing or cost burden
Weaknesses
- Dead when no face-down monster is on the field
- No board, card advantage, or refuel
- Frequency is largely shared with Book of Moon, not evidence of standalone power
Counters / choke points
- Generic spell negation
- Opponents who avoid setting monsters face-down make it a dead card
Best use
Utility flip for face-down monsters in Book of and similar decks. Decks: Book of, Exodia, Greed. Suggested copies: 2.
Evidence & gaps
- Verified: Text: flips 1 face-down monster on the field into face-up Attack Position; Spell Card, Normal race; can never be material; 213 decks, 1.6 average copies, 3-of in 53 decks
- Observed: 51 distinct archetypes; 74.2% of decks in gameplay type 4; Book of Moon in 61.5% of decks; Usage statistics: 60% inclusion in Subterror and Nimble at 2 copies
- Inferred: Narrow soft interaction limited to face-down monsters; Dead against decks that avoid setting monsters
- Data gaps: no combos supplied; combo conversion is text-only inference no guides supplied no banlist token; assumed 3 copies (unlimited) usage statistics cover only 2 archetypes gameplay type IDs are not labelled in the evidence