Mage · Fire · tier 3 · from level 20
Improved Flamestrike
+30.5 Flamestrike
3/3 · level 60 · per cast
Improved Flamestrike
Rank 3/3
Increases the critical strike chance of your Flamestrike spell by 15%.
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.