Welcome to Librarium Online!
Sorry for being such a newbie but i have heard the term BSB and was wondering just what exactly it meant.
It stands for Battle Standard Bearer. It may hold a magic banner or it can just be used to re roll brake tests. Or both.
Thank you very much it just wasn't clicking for some reason, about to start a high elf army and i am trying to ingest as much info as i can.
Glad i could help! =)