Are there any blackguard specific weapons? Spoilers

Klorox

Paladins get the holy avenger. Can blackgurds use this?

Is there some kind of unholy avenger for these guys?

I want to know how to plan my proficiencies.

Erinne

http://baldursgate.wikia.com/wiki/Ir'revrykal

EDIT: Oh, and Blackguards can't use Carsomyr, it's alignment- as well as class-restricted.