Trinket + Talent = ?Follow

the card stacks with talents.

unfortunately there are better BLUE trinkets out there that will scale better and serve you better. For a frost mage with winter's chill, your crit rate will be pretty decent but your damage mostly is not dependant on critting like fire mages.

I would look at 20% of crit rate to be decent for a frost mage. Once you collect enough gear to provide you with 20-25% crit the card will become very useless since your normal crit rate is lower than what the card will do for you.

Given that, I would not blow a whole lot of money on this unless you are terribly undergeared which makes this trinket useful.

I believe the blessings deck is far better than that because it gives you a strong amount of +dmg (80) once you stack enough shots onto the boss.

I personally use Icon of the Silver Crescent + a +26 spellhit trinket that you get for killing a 72 elite in netherstorm (until I hit revered with scryer that is).