Spec for World PvP and BGs?
So I'm a mostly PvE player,
and while I know that Frost is generally considered the best Arena spec for mages, I'm not that interested in doing arenas as of the moment.
I do wonder which spec would be best for World PvP and BGs, however, assuming limited (little-to-no) PvP gear.
I presume Frost would do quite well at the former due to slows, but would it, say, be better to just go with fire in BGs for more burst?
On a side note, also wondering if it's worth it to build a Relentless set for just these activities.
Thank you in advance!