Mage · Frost · tier 5 · from level 30
Improved Cone of Cold
+117 Cone of Cold
3/3 · level 60 · per cast
Improved Cone of Cold
Rank 3/3
Increases the damage dealt by your Cone of Cold spell by 35%.
Averages, counting crits and misses, for a level 60 Mage with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.