Warrior · Fury · tier 2 · from level 15

Unbridled Wrath

Rank 5/5

Gives you a 60% chance to generate 1 additional Rage when you deal melee damage with a weapon.

Doesn't change the damage or healing of any Warrior spell.

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.