Spellcasting Prodigy( Player's Guide to Faerûn, p. 44)
You have an exceptional gift for magic.
For the purpose of determining bonus spells, treat the ability score that controls your spellcasting (Charisma for bards and sorcerers, Wisdom for divine spellcasters, or Intelligence for wizards) as 2 points higher than its actual value.
You can gain Spellcasting Prodigy multiple times. Each time you take the feat, it applies to a different spellcasting ability score. You can take this feat even if you don't have any levels in a spellcasting class yet. You may select this feat only as a 1st-level character.