Frost Armor

Frost Armor is a mage spell that grants a self buff which reduces physical damage taken and has a chance to snare attackers.

It cost to learn at level 54.

Talent Improvements
Permafrost: At max rank reduces enemy movement speed by a total 40%.

Glyph Improvements
Glyph of Armors: Increases the duration of your Armor spells by 30 min.

Tips and tactics
The snare effect means never having to fight aggressive mobs you'd rather run past, assuming they don't resist every time. On foot, a chasing creature will get in 2 or 3 hits (some things run faster and swing faster than others) before you outpace them; mounted characters will be hit a single time before getting away.