There are 2 options that buff up the bard to make the bard more useful with spells... 1 level in wizard so you can use any wizard spell in the game by memorizing scrolls. You need the int amulet off the ogres to make it viable. Another is 2 levels of sorcerer to get more spells and metamagic... most importantly Twinned Spells. Or both if you don't mind losing the 3 top levels of bard spells. My favorite builds in the game.
