Question! Wizard (Diviner) taking a level of Bard, is it a good idea? Also SOS, I have little to know idea what Im doing.
Ive only ever Multi classed in 4e where it was a feat, much less with a spell caster. My character Sigrunn, recently got a fancy gown (the dice deemed it so.) and the dice also deemed that she rather liked it (though she's growing into it).
She has a reasonable Cha as it is (14), but I'd be trying to grab "lousy" spells, spells that dont rely on her Cha very much. (was hoping for Mage armor, but alas.) She is currently level 2, I figure that she wants to wait till after 4 to grab the level, but again Ive never done this.
My fighter in my Rise of Tiamat game took a level of bard a while back and it's definitely retarded his track in terms of fighting optimization... BUT it's been fun. He has a CHA of only 14, I think, but he's not using his bard spells on offense (except for the occasional Vicious Mockery). He's just a pompous fighter and a mediocre bard.
I might have regretted it when I was sitting at Fighter 10/Bard 1, but it's had its high points too. Aside from role-playing fun, Healing Word has come in very handy a time or two, as has Heroism. You may not want Heroism as a wizard, but I'm sure there are other spells that aren't dependent upon a high CHA to be effective (though as a Diviner a low CHA won't always be such a handicap).
Might wait till after Level 5 though, that's a big power jump and level 1 Bard spells might be a poor replacement for Fireball, Hypnotic Pattern, Counterspell, etc.