Pokémon B/W. How's the adventure going so far?

[Chaoxys]

I still haven't evolved my Scraggy. With Eviolite, he's able to take a few hits from the Elite 4, but when I tried evolving him to see if it made an improvement, he was taken out in a single shot.

I kinda want Scrafty but I don't think I wanna risk losing the defense bonus.