Thought about playing two different characters, and PS the setting is balls-out awesome.
First off, doers the Spellfire wielder feat act as a 3.5 rod of negation, i.e. no action needed to absorb oncoming spells (which I'd like to say I always read to mean you couldn't be buffed), or is it a move/standard/whatever it was in 3.0?
Second, if that's out, how would a changeling wild-shaping ranger ex-convict, heading towards warshaper and master of many forms (or something like that) sound to you? If anyone's confused, think the character Envy from Fullmetal Alchemist, but slightly more DnD suited. It'd be my schtick to transform into creatures I learn about and use their bodies for combat.