Well..... actually..... as a rough idea......
I'd been meaning to learn incarnum, primarily because I was interested in this
Midnight Occultist prestige class that combines pact magic and incarnum. Obviously this would come in the future, but it would be the direction of it. Otherwise, if incarnum is something that might not work wonderfully in this realm, I could go Anima Mage with a slight alteration to the characters personality.
X (being a name I haven't come up with) grew up elven nobility, the old story. Family heirloom was a simple crown that once had allowed his family communication with otherworldly beings some called demons but they called gods, then the collapse happened. When he was born, it was thought he was insane, until he inherited the crown. Magic was coming back into the world, and he was recovering his family's long-lost traditions. He journeyed out on the principle that he would find a group of worthy warriors to join him, slay the elven abomination that plagues the land, and raise his family's name. His special item would be this crown. Most vestiges would be hailed as "gods", though the translation of them might be closer to "spirits" or "demons". Yes, slightly Elric inspired.
I'll iron it out and it'll sound a bit less shitty, but while I'm ill and unable to think that's the idea. So yeah, how do you feel about that prc and incarnum? I'll start looking for an appropriately pompous elf...