Warrior · Arms · tier 2 · from level 15
Improved Overpower
+119 Overpower
2/2 · level 60 · per cast
Improved Overpower
Rank 2/2
Increases the critical strike chance of your Overpower ability by 50%.
Averages, counting crits and misses, for a level 60 Warrior 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.