So I'm currently running CotCT for my group and I'm on book number 6 for making my conversions for them to fight as we're almost done with the 5th book. I'm working on Converting Mistress Kayltanya to pathfinder from 3.5 and I've hit a rather big problem I don't know how to fix.
Apparently in 3.5 the red mantis assassin prestige class got up to 5th level spells at 10th level (I don't have my book with he prestige on me as I live at 2 houses and won't be able to get if for about a week.) however in the pathfinder inner sea guide the prestige class only gets up to 4th level spells.
Should I just drop the 5th level of spells and not worry about it or do something else? I'm normally a raw kind of guy but if this would change the dynamic of the fight as much as I think it might should i just add the spells into the list and say that Mistress Kayltanya is just cool like that and gets extra spells if my player's say anything?
The only major change I remember is that she can't cast word of recall as the Morale section in her stats intends. This is easily circumvented by making sure she has maxed UMD and a scroll.
I would just drop the 5th level spell. I'm assuming the Pathfinder version of the prestige class has something to offset it or is better balanced. If you're going to convert to PF, you take the good with the bad.
The 3.5 version had a limited spell list of its own, while the PF version draws from two schools (plus a few spells of other schools) of the sorcerer/wizard spell list.
If you convert fully, then her number of spells known will be markedly reduced (two 4th-level spells rather than three 5th and four 4th). However, since she can cast so few of them per day anyway, I'm not sure this really changes much as far as the encounter goes.
While the spellcasting has been lessened in power, AFAIK there are also a number of other changes with the PF version of the PrC compared to the 3.5 version. For instance, the 3.5 version could cast spells in light armor without ASF, while the PF version can't.
Ultimately, I think that if you convert everything else, you should also convert this character. Scrolls and wands can probably offset some of the lost magical versatility. And remember that converting her lets you add another class level :)