sorry I meant get shiver armour......And dont get frozen orb

youll do like 2.6k blizz dmg if you follow my setup I think not sure

I personally like orb over blizz. I max orb and get lvl 17 ice mast with gear. Always need 1+ into static and warmth. I put into tele till it gets down around 10ish mana per cast becuz we r rushing and do a shit ton of teleing, yes u can pot but gets annoying. Then I too go lvl 10ish into Firewall and 1 into fire mastery. This works great for A2 Maggot Boss at staff and the fire casters at summoner.. static and FW. U could go shield or synergy for orb.

Rusher sorc needs:

3 opener chars for duriel (norm, nm, hell)

max orb
15 mastery
1 statik
1 shiver armor
as much as u can in tele

nn 2nd atack skill
maybe a bit fireball for lvling

The 17 cold mastery myth comes from the fact that res can't go below -100 and so for monsters with 0 cold res more than 17 cold mastery is useless. However many monsters have more than 0 cold resist including all act bosses so you should max cold mastery. If you are using firewall and have a decent mana pool (2 sojs) you could try maxing warmth instead of tele as it is a synergy for firewall. It isn't as effective at conserving mana but can work. I sometimes rush on my chant/orb sorc and she never needs more than a belt full of mana potions per difficulty. Just an example, I don't think chant/orb is ideal for rushing lol.