Sunken Temple

I have frost bolt, frost nova, and cone of cold as attacks. Arcane Explosion is used in instances when neccessary, arcane missiles are used against frost resistant monsters, fire blast sometimes kills fleeing enemies (better range than CoC), and Blizzard is ONLY usefull in group PvP.

Arcane Explosion is great for farming cash and/or Cloth. Just take a Priest with you.

If you're spamming Improved Arcane Explosion, you're an aggro machine, and the Priest can keep you alive easily.

Ask Slim.

Improved or not, you're going to need a priest, so I figure those 5 talent points are better spent elsewhere.

If it's not Improved, you'll never get one off in less than a 5 second cast if you have mobs pounding on you.

I've done it on greens without a priest, I just take a few mobs less. Having a holy specced priest with me makes it so much faster, though. I generally have no problem getting our holy-specced to come along, as he LOVES watching the light show I make whenever I go off on them. I did it in Uldaman at one point when my group got rushed by a bunch of regular mobs, it's massive DPS.

http://www.thottbot.com/index.cgi?i=10442

Got that there. I <3 it.