Frost
Mage was undeniably the strongest leveling spec in the Classic universe. It's ability to kill any amount of mobs with
Blizzard made it the strongest and fastest leveler in the game. However, in WoW forever
Permafrost and
Improved Blizzard has been severely nerfed. This means you can no longer AoE farm by Blizzarding mobs into Frost Nova and repeating the process without mobs ever reaching you, or infinitely kite mobs using
Cone of Cold.
Frost did get some new abilities for WoW forever. Most noteworthy is
Ice Lance,
Fingers of Frost and
Ice Barrier giving frost spellpower.
Winter's Chill was also reworked, resulting in
Cone of Cold making it into the raiding single target rotation!
Frost mage is still decent for leveling and solo play, and very strong in PvP. For endgame raiding deep
Frost is currently not good, but some builds go down and pick up
Fingers of Frost such as
Frostfire Bolt mage.