True wizards are pretty squishy, but if you do swap out FnR for Halo and APD's like MagicMe was mentioning they are actually pretty tough. You can see plenty of videos of a wiz on youtube tanking GR50's pretty well. That combined with freezelock from Cold Snap Frost Nova makes RG's easy to fight.

MagicMe, you can't proc tal 6p from Frost Nova because you need to use Cold Snap if you want to be able to perma freeze bosses. Also at the target mark for CDR for freezelock (53.5%) the cooldown of teleport is between 7 and 8 seconds. That is too long to reliably use it for triggering arcane with Tal's.

I was banking on using WoH so I would use the fire version of Explosive Blast, the cone aoe version of the lightning generator, the arcane blackhole that buffs spell damage for number of mobs hit and then running Blizzard or Frost Hydra for cold. The rune that makes Blizzard only cost 10 is appealing to me.

I want to stick to using FnR if at all possible because the damage bonus is just so high from it, but if toughness is an issue I can swap to Halo I guess. Just not sure how I will fit Ice Armor into my build. There is also the Mutilation Guard which has a near identical effect, but I would have to give up Taeguk or Toxin gems so I don't know if it is worth it. I am kinda banking on the constant spamming of Cold Snap freezing targets + APD's to provide the toughness the wizards will need. That and the armor buff from Taeguk should be pretty helpful (Woh build with explosion refreshing Taeguk stacks is another reason to run that build 20 AP every 2.5-3 seconds is sustainable... my only other spenders would be Black Hole and 10 AP cost Blizzard with Lightning generator filling the gaps to keep up FnR).

Btw does anyone know if Halo uses the rune of Frost Nova you have on your skillbar? I don't really play wizard much so my only one on non season has been neglecting and barely has firebirds gear. I don't have one on S2 so no Halo heh.