The Caverns of Nabiansi - Choose Your Own Adventure Random Dungeoncrawling [D&D 3.5]

[Xanmyral]

Bard's use Charisma for their casting stat, Beguiler's use Intelligence. So, no shared casting stat. I will admit, that the low health will be annoying. The redundancies in spells can be counted on as extra spells, or using the Beguiler for the trickery and illusion spells, Bard for the spells that aren't on that list like heal, attack spells, etcetera. While the low HP, and 3/4 BAB will be a sting, we can mitigate this with the proper use of slaves, minions, and companions to do the fighting for us.

EDIT - If other options are wanted, these might be ideas. Dread Necromancer/Sorcerer, Beguiler/Duskblade, Druid/Cleric (Not recommended), Monk/Wizard (Suck + Not Suck = Good?), Wizard/Cleric (Double Caster?), Paladin/Duskblade (Wide range of stats needed is bad, but possible), Knight/Duskblade (For those who dislike Paladins), Rogue/Wizard (Not bad, but can be better), Beguiler/Wizard (Casting in light armor, can specialize and block Illusion and Enchantment but still cast spells from that, same casting stat as well.)