How does Spirit Barrage with "The Barber" work exaclty?

[Kindran-11838]

Spirit Barrage - Mechanics Explained

I see so many questions on this ability along with The Barber and Gazing Demise so I’m explaining it here. Base Spirit Barrage w/ no items You cast Spirit Barrage and it deals damage as it hits/ticks Spirit Barrage w/ The Barber You cast Spirit Barrage and it deals 0 damage as it hits/ticks. Spirit Barrage now deals all damage in aoe when you stop channeling, the skill runs out or accumulate enough damage to instantly kill the mob. Spirit Barrage w/ Gazing Demise Spirit Barrage now gain…