Bladesinger

Weapon and Armor Proficiency: The bladesinger gains proficiency in the use of no weapons and with light armor.

If the bladesinger wears medium or heavy armor, he loses all benefits of any of his song abilities (bladesong, lesser, spellsong, song of celerity, greater spellsong, song of fury).

A bladesinger suffers the normal arcane spell failure chance when casting spells while armored (except as noted below).

Spells per Day: Every level a bladesinger gains, the character gains new spells per day as shown. When casting bladesinger spells, the bladesinger’s caster level is equal to his bladesinger level. A bladesinger’s bonus spells are based on Intelligence. The Difficulty Class for saving throws against bladesinger spells is 10 + the spell’s level + the bladesinger’s Intelligence modifier.

A bladesinger keeps a spellbook and must prepare spells each day as a wizard does. He can have any number of bladesinger spells in his spellbook (see Writing a New Spell into a Spellbook, Player’s Handbook, page 155). At levels 1 through 9, a bladesinger gain two spells he can add to his spellbook free. These spells must be bladesingers spells the character can cast.

Bladesong: When wielding a longsword in one hand (and nothing in the other), the bladesinger gains a dodge bonus to AC equal to his Intelligence bonus.

Bonus Feats: At 2nd, 6th, and 10th level, the bladesinger gains a bonus feat. These feats must be drawn from the following list: Any Metamagic feat, Combat Reflexes, Improved Critical (longsword), Improved Disarm, Mobility, Quick Draw, Spring Attack, Whirlwind Attack.

Lesser Spellsong: When wielding a longsword in one hand (and nothing in the other), the bladesinger can "take 10" when making a Concentration check to cast defensively.

Song of Celerity: When wielding a longsword in one hand (and nothing in the other) and using the full attack action, the bladesinger can cast one bladesinger spell each round as a free action.

Greater Spellsong: The bladesinger ignores arcane spell failure when wearing light armor.

Song of Fury: When wielding a longsword in one hand (and nothing in the other) and using the full attack action, the bladesinger can make one extra attack in a round at his highest base attack, but this attack and each other attack made that round suffer a -2 penalty. This penalty applies for 1 round, so it affects attacks of opportunity the bladesinger might make before his next action.