[Harrow] already has a couple of good buffs for your team. This build attempts to combine them with another subsumed buff to significantly increase your team's efficiency dealing with enemies.

Condemn is replaced because it's the weakest ability in [Harrow]'s arsenal.

Nourish, Smite, and Shock all increase the elemental damage of your weapons and even some of your abilities. This lets you save a mod slot or two on your other builds in your loadout. Nourish is the easiest to slot in as it doesn't require an augment and our polarity plan makes slotting one in difficult.

This build can also work with other damage buffing abilities like Xata's Whisper, Eclipse, or Roar. It even works with hybrid defensive/offensive options like Elemental Ward or Warcry. We don't really need those buffs to kill enemies but they can help you and your team to run unconventional or off-meta weapons.

Enemy Radar mods help us to find enemies. Due to the nature of the build we need to sometimes seek out stragglers.

Augur mods and/or [Brief Respite] allow [Harrow] to spam Penance. The ability isn't able to be cast when you have zero shields so this allows you to loop the ability during enemy downtime until you hit the duration cap.

[Natural Talent] helps us to curb the long casting times on all of your abilities. It isn't suggested to cut this mod because your build won't work anywhere near as fluidly.

Arcane Energize and Arcane Aegis are both flex arcanes. Energize might be redundant if you're constantly able to proc Thurible. Aegis just gives you a small chance to become nearly invincible when it procs. Either can be replaced with arcanes that suit your playstyle.