D&D 3.0: Tales from Mystara
- These books are written by experts on a specific topic (Craft, Knowledge or Profession skill) and contains easy to look reference on that subject. A character must study an academic tome for a total of 1 hour to gain a + 2 equipment bonus to his next check on the particular topic the book discusses. The bonus is not permanent and the tome must be study again for each individual check. Every other rule for knowledge checks apply. Characters don’t need to have ranks in the Knowledge skill in which the tome’s perusal is based to made the check and they will only have their Intelligence bonus plus + 2 given by the research as a equipment bonus on his check. A reference tome allows for a retry as long as the character expends another hour reading the tome. Cost 500gp; Weight 2lb.