Spawns a wisp that orbits Isaac and fires small spectral tears alongside him. The wisps are damaged and eventually destroyed if they make contact with an enemy, an enemy shot or an explosion.
When a wisp is destroyed, the sound of fire being extinguished plays.
Multiple wisps can exist at once. Some combinations have an upper limit of 26 wisps: an inner ring of 6, a middle ring with 8, and an outer ring of 12.
The Book will combine with other activated items, possibly granting special effects on the created wisps. The recharge time will be based on the other item.
While held, guarantees the first Devil/Angel Room encountered to be an Angel Room, and increases the overall chance of getting one.
Even if a Devil Deal has been taken, Angel Rooms are still possible to encounter. If a Devil Deal is taken before encountering a Room naturally, it's no longer guaranteed to be an Angel Room and follows the usual rules.
This item belongs to the Bookworm set. Collecting three items from this set will transform Isaac into Bookworm.