From the Web site:
Looks pretty cool, and should be very helpful with all those rather ... underhanded ... types that you interact with (or that Thom accidentally introduces you to...)The Book of Roguish Luck offers the new Luck rules subsystem for all classes, plus the bandit, gutter mage, and shadow thief core classes and three prestige classes. In addition, it presents expanded guild and sneak attack rules, the shadow magic school of rogue spells, more than 30 new feats, new equipment and magic items, and almost 80 spells.
This book expands thieves’ guilds to include complete stats, resources, and initiation rituals. The Book of Roguish Luck also shows you how to fence goods, gamble to win, pick locks, bribe officials, and -- simply put -- raise hell.