If you get Intitiate of Mystra, take Permanent Emanation (Antimagic Field). Take that, everyone!
If homebrew is allowed, go for a bit of ToB for the Breath of Fire discipline (strikes using your breath weapon...)
I would suggest grabbing those tasty, tasty feats from Dragons of Eberron. You know, the one that nabs you Change Shape? Then grab Warshaper.
Another fun thing to do is grab Initiate of the Sevenfold Veil. Persistify that spell that gives you 1 temporary action point every round. Use your FUCK YOU options as often as you want.
Grab a couple levels of wizards, and go for Ultimate Magus. There, you just got awesome powers, and if you can get 6th level wizard spells, you can go for Arcane Recharge for spells of 6th level or below.