Spells
Source: Pathfinder Core Rulebook, p. 78
A wizard casts arcane spells drawn from the sorcerer/wizard spell list presented in Chapter 10. A wizard must choose and prepare his spells ahead of time. To learn, prepare, or cast a spell, the wizard must have an Intelligence score equal to at least 10 + the spell level. The Difficulty Class for a saving throw against a wizard’s spell is 10 + the spell level + the wizard’s Intelligence modifier. A wizard can cast only a certain number of spells of each spell level per day. His base daily spell allotment is given on Table 3–16. In addition, he receives bonus spells per day if he has a high Intelligence score (see Table 1–3).
A wizard may know any number of spells. He must choose and prepare his spells ahead of time by getting 8 hours of sleep and spending 1 hour studying his spellbook. While studying, the wizard decides which spells to prepare.