So Cleave (Gathering Storm) and Rend (Mutilate) do pretty much exactly the same thing: Chill, and apply a 10% increase to damage done to the chilled enemies. Does anyone know whether or not this stacks? Also, would it stack with other similar effects, such as the Wizard's ice passive? I've been wanting to add a degree of party damage buffing to my barbarian and these skills seem like the only way. I'd like to avoid using both if there's no point to it.