Spellbook of Power is a Normal Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Spellbook of Power is Unlimited.
YGOPRODeck lists Spellbook of Power for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Spellbook of Power belongs to the Spellbook archetype—use that tag when searching for engine pieces and tech options.
A listed print of Spellbook of Power appears in Astral Pack Two (AP02-EN003) at Ultimate Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Spellbook of Power is about $0.14 on Cardmarket (prices change frequently).
