Gurubashi Berserker

Increases your abilities rage cost by -1% and reduces your warrior gcds by 0% seconds per stack, cannot go lower than 1 second. Also reduces the damage dealt to players by 1% per stack. If Raging Blow is used with 6+ stacks it has a 10% chance to refund a charge of Raging Blow!, or instead a 25% on a normal hit and 50% on a critical strike chance to reduce the cooldown of Siegebreaker by 10 sec and Gurubashi Rage by 4 sec.

Increases your rage costs by -1%, lowers your global cooldowns of warrior abilities by 0% per stack, cannot go lower than 1 second.