Arcane Barrage

Arcane Barrage is a warrior ability that scales with physical power. Activating it sends the player swinging rapidly through a series of magenta wind crescents charged with arcane energy, striking enemies for 1.44x damage per swing which combines to 15.84x. The ability lasts 2.4s and has a 5s cooldown. It's obtainable from Winter Outpost on Hard difficulty, requires level 44 to equip, and sells for 13,000 gold.