I was browsing through the dndtools.eu app (which is awesome btw) to see how it worked, and re-discovered the
Spelltouched feats. I don't think I'd looked at them since becoming an optimizer... there's actually some really awesome stuff in there.
Conductivity is kinda cool if for some reason you'll be taking a lot of electricity damage... I'm curious how it would interact with a Shambling Mound abuse build, actually. If you have a setup to auto-take electricity damage, it would be sweet to be able to fire some of that off at your enemies.
False Pretenses is very similar to the
Disobedience spell. The spell is superior, but the feat could be a good replacement if you don't have access; also the feat doesn't allow the
caster a save to realize what happened.
Live My Nightmare is just awesome. Every time you're targeted by a divination, you throw a free
phantasmal killer at the source. While many things will likely be immune to mind-affecting stuff, if not, this is a
great feat for high-charisma builds. The best part of this is the side effect that you automatically know whenever you're targeted by a divination spell!
Momentary Alteration gives a non-caster (who has drunk a potion of Alter Self before) access to Alter Self for 1 minute/day. If you can't think of ways to abuse this you're not trying.
Naturalized Denizen is absolutely
required for Fiends of Possession.
Omniscient Whispers gives you a free 1-question
commune once per week. Not too overpowered because of the limitations, but still kinda cool.
Polar Chill is awesome for a precision damage build, since 1/day you can make everyone in a 20-foot radius flat-footed. Basically it's a free
ice slick casting.