Optional Sub Force Ice - This whole mastery line is optional

Now why would anyone train the ice line in a fire glaiver?
In my build I subforced ice to gain an advantage over other fire glaivers.
1) Ice passive gives physical defense.
2) Ice Buff gives physical defense.
3) Gives you access to the ice snare.

Ice River Force - Great for pvp, applies very often using chain spear, not as much damage as fire imbue.

Weak Guard of ice (Max) - Increase Physical resistance buff.

Cold Wave Arrest - Level 1 single target Frostbite
A good skill to have against runners or slowing down that trader using his camel as a tank trying to make it back to town on the last stretch. Higher levels of this skill provide longer effect time and requires bigger pills to dispell.

Frost Nova Wind - Level 1 Area Effect 50% Frozen Point Blank Range
This skill is hard to decide on because it cost alot of mana, but 50% frozen status during a fight can declare life or death especially if you're getting 2 or more guys trying to team up on you. http://www.silkroadtavern.com/strategy/guide/439