Shatter
Make good use of Shatter –This is an iconic and core mechanic for Frost Mages that massively amplifies the damage your spells. Taking full advantage of it is critical to mastering Frost Mage. This means minimizing how many Shatter opportunities are wasted and prioritizing its benefits for your strongest spells.
Cooldowns
Keep Abilities on cooldown – Frost Mages have many strong cooldowns and keeping them all ticking allows using them more often.
Manage Procs
In particular, Fingers of Frost and Brain Freeze will be obtained both deterministically and randomly. Using these procs as effectively as possible is very important.