Quote Originally Posted by The Underlord View Post
Could you do a nightmare monster class?
Yes, I could.

Quote Originally Posted by Metahuman1 View Post

And as for the spell casting, maybe just make it so it advances Bard spell casting then? Or just advances Spell casting in general? Couple with slightly higher requirements so that it comes out more like a PRC then a base class and it won't be too broken.
Given all the other stuff a bard would get going through this theoretical modification, I just don't think it really needs spellcasting too.