Hi there,
[Harrow] main here.
I was looking around and was playing with suggested builds for [Harrow] but never felt 100% complete.
Why aren't we using Augur mods with this frame? Guides suggest normal [Redirection] and [Vigor].. but this is perfect.
I found the sweet spot with this build.
You can take it every single mission (except Eidolon hunts due of specific less duration and [Coaction Drift] on Exilus etc.. you can find those build in this site.) and have fun! :)

Equip [Augur Pact] to your secondary weapon aswell!

Arcanes are determined by your play style and preferences.