Magic/Chaos magic (change, maybe)
Well, you've already mentioned a fondness for Wildmagic by EN. Complete Arcane is supposed to have some stuff. If you have access to the old Wild Magic regions from the older FR books, you can have some strongholds of Chaos within them where magic on the outside suffers from wild surges.
Psion said:
Chaositech (corruption? "violation of the natural order")
The Dark Plea (madness? or maybe another face of entropy?)
Demons (war? that theme would work well with both Palpatur and D'stradi)
Sounds like you've already got the nail on the head here. The Dark Plea would probably work against the idea of causing the end of the world though unless that's how it is in turn born since it's a future entity working through the past. If you're planning on doing more with dreams and have Wheel of Time or Occult Lore, there might be some good options for dream travel or battles.
The D'stradi are cool and act as perfect engines of war so I agree with that part 100%.
Psion said:
That was one of my "best of the Dragon" picks, but I am most intrigued about using it alongside Hordes of Gehenna (which is a different theme than chaos.)
Well, if you're talking about The Book of Fiends, one thing that might bear though is that one of those daemons is a destroyer of worlds. Perhaps the worshippers of chaos want to unleash it and other 'doom' beasts like the tarrasque and that big sucker from the Monsternomicon. Can't remember it's name right now.
Psion said:
Now there's some thoughts in there that were intriguing. I thought about having the different chaos factions not exactly getting along (this is chaos, after all), but never helpful in any way. Something I will have to consider.
Well, they can be helpful in a few ways. First, they might need something from the party. Perhaps the spellcaster has a unique or rare spell. Just because the NPC in question is a worshipper of chaos doesn't mean that it's stupid. Friendship and slow corruption can be great tools. He could throw them a party and then get them into different fields like drug use or other decadent pleasures.
On the other hand, just because it's an agent of chaos, doesn't mean it's beyond redemption as it may still hold onto a few shreds of it's humanity. "No, anything but that!" It's turned more than one villain into a tragic hero as he turns against his master. Of course this might work better as a romantic subplot as well.
Psion said:
As an aside, now that you bring Slayers up, it reminds me of one thing I like better in the way they handle things than the D&D default: Templates/chimera/"half-creatures".
Well, the main dude, Zelgadias, always had something to adventure for as he was always seeking a way to undo the curse that had been placed on him. This is another example of where an entity of chaos could grant a follower great power, but due to the changes it makes in that character's physical makeup (not human anylonger), the follower turns against the villain, perhaps even working alongside the party. Might be a good backstory for any player who happens to lose a character. "Oh, don't worry about it, I wont' stab you in the back until after we deal with X!"