I've been looking at binders, and was thinking of changing my build around. It would function pretty much the same ultimately (self-buffing beatstick Ur-Priest who possesses people), but would get there alot differently, and the flavor of combining Binder and Ur-Priest is awesome.
I'm thinking something like this:
Human Sorc 1/Binder1/Anima Mage 3/Ur-Priest 1/AM+4/Cont1/SwBE1Feats: Spell Focus: Evil (human), PrecocApp(flaw1)(retrained to Silent Spell at ECL 5), Still Spell (flaw2), Toughness (1)(retrained to Improved Binding at ECL2), Extend Spell (3), Mother Cyst (6), Practiced SC: UrP (9), Persistent Spell (12), Iron Will (Otyugh Hole)
EBL 10 (5th level vestiges), UrP 7, Sorc4
I could drop the Divine Metamagic stuff entirely (or pick it up later), but still get free metamagic twice per day with Anima Mage, and I'd have 5th level vestiges, which would add a ton of versatility, but nothing too powerful. I'd also have 2nd level sorcerer spells, and I think the character would actually be more playable from 1st level (not a concern for this game, but cool for the build).
I'd have to cheese the entry with Precocious Apprentice + Improved Binding. I'd also need to use the adaptation for Anima Mage (using it to advance divine spells), and change which class I'm advancing with it (going from sorcerer to Ur-Priest). I'd lose Cha to saves and Mettle, but I can bind a vestige which gives me a reroll every 5 rounds, which is probably better, and his saves should still be very high with active buffs anyway.
Any problems with this, Tshern?
Link to the modified character.