Solarious
Explorer
Magic of Eberron. Gatekeepers who embrace half-daelkyrs and use symbionts to fight abberations. Grabs 4/6 spellcasting, lots of class ability goodies, symbiont luring, an expanded spell list, and Favoured Enemy (Abberations). Luna may have to rework her character a bit, but Flame Strikes would come in fast and furious, although it sacrifices much of her shapeshifting power.