This build maximizes the endurance of your hero. If you're not good at the art of 'escape', this build is for you. Also, this build maximizes your use of the Frostbite / Chill effects. More chance to CC the enemy team and sometimes lets you escape imminent death.

You can also get "Ice Floes" instead of "Icefury Wand" if you prefer "Cone of Cold" ability over "Blizzard".

I'm a casual player, so I'm not assertive about how effective this build is. Looks like it works for me.