The ''Bard of Terror'' has one fear like ability...and then is just a bard mixed with a little archivist, and then has some really wacky broken capstones. It does not really fit ''terror''.
I'd add a lot more fear type effects....
Like what? The only thing I can think to add is a fear aura, after all they do eventually gain immunity to fear...
Homebrew: If it is mine feel free to PEACH and/or use it.