I am working on a solo-focused WF Sorc/Paly build concept (envisioning a charmed Army of God roaming a dungeon), and wanted to get a little more info on how Charm works under certain conditions.
What do I need to do to continue using these spells reliably as I level up? Heighten/Spell Focus/Spell Penetration feats? When should I worry about picking these up? Since I'm going WF and my starting CHA will be slightly gimped (starting at 14), does this change anything? What about Improved Heighten/Penetration Enhancements? Improved Heighten seems a waste given the number of SP I'll have and the small amount of savings.
I've read that Charm Undead becomes fairly useless once they start being intelligent. Is this true, and at what level does this start to occur? Can this be overcome w/ feats/enhancments?
Aura of Good & AoE Buff Spells - Will charmed critters receive the buffs from Aura of Good? Will the save bonus affect their ability to break the charm (they are allies, but I am not technically evil). What about AoE buffs spells like Haste/Rage/etc?
Still fairly new to the game, so feel free to impart any additional knowledge you might think is useful. I'm not really worried about the end game too much (4th MMO and I have yet to hit the level cap due to altoholism), but I will hopefully make it out of the single digits.
Thanks in advance.