Obviously prestige out after Wizard 5, possibly something like Wiz 5/Mindbender 1/Incantatrix 10/Fatespinner 1-2...
Fortress would obviously be hidden and trapped with nasties, probably stuff that doesn't really affect any undead minions but will make life miserable for the PCs (anything targeting Fort/Con, Uttercold Assault-like shenanigans etc.)
These are the rather obvious things ofcourse, I'll post more when I think of more stuff and I'm sober
Indeed. When I say Wizard in this case I was thinking of casting ability. She needs to be at least as capable as the party Wizard, especially since there's also an Artificer, a Cleric, and a Favored Soul involved.
If I recall correctly Vol operates somewhere around Lhaazar, is that right? What other canon information is available on this?
I know Incantrix is awesome but forget which one of the Better Forgotten Realms books it's in.
I also looked at Fatespinner, but it's not striking me as exceptionally useful. Best I can see coming out of it is the 1/day reroll and the +4 DC to a single save. Which is certainly nice, but save lowering effects do about the same thing under fewer limitations. Maybe I'm missing something.
The Mindbender dip does allow for Mindsight without missing anything. So that's cool. Not many skill points required either.
Also upon further reflection I realized something. Even if we ignore the fact most of the half dragon and lich stuff is overpriced, redundant, and obsolete 17 class levels + those = CR 21. If the party has gotten this far they've fought a lot of CR 20 stuff and a few things higher than that. I peg the next highest around 22 or 23.
So I revise my original post. 20 levels of arcane casting. Is there a Wizard parallel for Spell Immunity to deal with those no save, SR: Yes effects?
Pseudo edit: Walker in the Waste is a good idea. I was considering this for a different opponent, but upon further reflection I couldn't think of a way to make it fit in. Though those 4 CRs from templates are annoying, especially when most of the benefits clearly do nothing.
Anything from a book I have is potentially fair game. So throw WotC material at me and we'll see what we can do with it.
Cash wise... she definitely has a literal fuckton of resources. See, I do WBL as combat effectiveness. One of the PCs has what essentially amounted to a Gygax trapped area accordingly because making her house VERY secure does not impact combat effectiveness. So of course I'm going to design along a similar line. As for her personal wealth (combat effectiveness) she will likely have much higher than normal NPC wealth. Possibly PC wealth, or even higher.
Evolved undead isn't worth losing caster levels. Sorcerers are inferior to Wizards.
There will be lots of minions involved. I'm just covering Vol herself for the time being. An 18th and 3 16ths would likely last two rounds against this party at their current levels (all casters are 15). By the time they actually got there... I underestimated, and need to up the ante.