I am looking to making a pure spy account. I've heard you need good bfe if this is true, what ebs should I be doing on that account to get my bfe high?
The best equipment are usually those obtained through EE wars/mith purchases etc. But before you begin EE warring, you should aim to get a lot of EB equipment. Wulf's PvE guide is here. It shows all the EBs and their respective equipment drops.
No xstals, pots, or mith required. Just the desire to talk about daisies in cc during the war, as well as walling all your teammates with "You Suck" if they get KO'd during the war. #winning