Quote Originally Posted by Owltoid View Post
Excuse my poor theorycrafting, but if you're wrath spamming (which is likely in PvP) then does Nature's Grace really help since you're limited by the global cooldown? Or does that 20% also shorten the global cooldown?

Mana regen from crit wouldn't be nearly as nice as nearly 400 extra spirit, though neither are a huge issue in PvP.
Yes - haste also lowers the GCD (capped at a minimum of 1 sec) as well as reducing casting time.

The mana regen really shines in BG's and WG where you are spending a lot of time in combat / casting, i.e. where spirit based regen is interrupted by the FSR (five second rule).

Cheers,
S.