Weapon and Armor Proficiency: A bard is proficient with all simple weapons, plus the longsword, rapier, sap, short sword, shortbow, and whip. Bards are proficient with light armor and shields (except tower shields). A bard can cast bard spells while wearing light armor without incurring the normal arcane spell failure chance. However, like any other arcane spellcaster, a bard wearing medium or heavy armor or using a shield incurs a chance of arcane spell failure if the spell in question has a somatic component (most do). A multiclass bard still incurs the normal arcane spell failure chance for arcane spells received from other classes.
Spells: A bard casts arcane spells, which are drawn from the bard spell list. He can cast any spell he knows without preparing it ahead of time. Every bard spell has a verbal component (singing, reciting, or music). To learn or cast a spell, a bard must have a Charisma score equal to at least 10 + the spell. The Difficulty Class for a saving throw against a bard’s spell is 10 + the spell level + the bard’s Charisma modifier.
Like other spellcasters, a bard can cast only a certain number of spells of each spell level per day. His base daily spell allotment is given on Table: The Bard. In addition, he receives bonus spells per day if he has a high Charisma score. When Table: Bard Spells Known indicates that the bard gets 0 spells per day of a given spell level, he gains only the bonus spells he would be entitled to based on his Charisma score for that spell level.
The bard’s selection of spells is extremely limited. A bard begins play knowing four 0-level spells of your choice. At most new bard levels, he gains one or more new spells, as indicated on Table: Bard Spells Known. (Unlike spells per day, the number of spells a bard knows is not affected by his Charisma score; the numbers on Table: Bard Spells Known are fixed.)
Upon reaching 5th level, and at every third bard level after that (8th, 11th, and so on), a bard can choose to learn a new spell in place of one he already knows. In effect, the bard “loses” the old spell in exchange for the new one. The new spell’s level must be the same as that of the spell being exchanged, and it must be at least two levels lower than the highest-level bard spell the bard can cast. A bard may swap only a single spell at any given level, and must choose whether or not to swap the spell at the same time that he gains new spells known for the level.
As noted above, a bard need not prepare his spells in advance. He can cast any spell he knows at any time, assuming he has not yet used up his allotment of spells per day for the spell’s level.