Need to trigger brilliant through Shroud of the Phantom before combat tho.
BDD + Salvation + Tons of mage buff, once trigger Blade Cascade, then switch to 2H axe, main dps source is DoT of bleeding cut, since u are at 0 recovery, each attack trigger DoT and thus u literally ignore enemy armor. Finish with Worthy sacrifice.
Edit: luckily I triggered blade cascade one first hit, otherwise it will be a bit slower, around 2:30 min, but I also paused a bit, so it's kinda of compen