Guys, experiencing ww barb player this season ive noticed that the rend damage is dealt to the target after 1 second of using whirlwind, got Ambos pride in cube.
The legendary property of Ambo`s pride says that:
Attacking with Whirlwind also applies Rend, and the total damage of Rend is dealt over 1 second.
The whole situation is looks like the Deathwish legendary property:
While channeling Arcane Torrent, Disintegrate, or Ray of Frost for at least 1 second, all damage is increased.
Please test it and let us know.