Evil Tomes are books containing forbidden knowledge related to blood magic that can be interacted with during Act 2. Hawke can find them either by receiving a letter from Idunna, or by simply finding a Tome lying around.
Upon finding a Tome, Hawke can:
1. Destroy the book:
- Gives you 750 XP; also, if Merrill is in your party, Merrill: rivalry (+10). This may be your best option, as destroying all five tomes will be the only way that will allow you to complete the related quest, Forbidden Knowledge for the same reward (and more) that reading one will give you!
2. Read the book:
- Reading the book and accepting the book's offer by leaving it alone gives you 2 attribute points. You can only read one book. If Merrill is in your party, Merrill: friendship (+5)
3. Take the book:
- Gives you a junk item called the Book of Forbidden Lore worth about 80 silver. Also, if Merrill is in your party, Merrill: friendship (+5)
No matter which option is chosen, the book spawns 4-5 shades/abominations in the area you must fight.
- All five tomes bear the Chantry sunburst, possibly to cover their true nature.