Library ExpandedThe Book of All The Books"Knowledge is Power"Passive item
Improves the effects of other book items. Check the synergies section for more information.

Once per floor, completing a challenge room will award a book from the Library pool.
This item contributes towards the Bookworm transformation. Collecting 3 items from this set will make Isaac fire an extra tear 25% of the time.
Costs 2 Heart Containers when found in a Devil Deal, or 30¢ in an Angel Shop.
- Tags -- Synergies -
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