Here we are taking at our advantage the high crit and good status chance of the [Edun].
Th stance help us build combo fast as its the fastest stance for polearms.
[Condition Overload] help us capitalize on that status chance boost with [Weeping Wounds] and [Vicious Frost] + the orange crits give by combo x12 [Blood Rush] and you have a 12k hit SP on pratically every enemy.
To make this weapon even more OP you can use any shredding abilty that will enable you to one shot everything and/or use [Voruna]'s first ability to boost even more the damage output.
If you want a corpus oriented build just switch [Vicious Frost] with [Gladiator Might], you'll lose status chance but win the toxin element that will destroy corpus health.