Because [Xaku] doesnt already have enough kpm (irony off) i made this Nourish build for the extra viral procs. (Also no Arcane Energize needed thanks to Nourish.

Each time you take damage Nourish will proc its viral on to enemies and this happens nonstop because thanks to [Combat Discipline] you lose 1 health each kill which will also trigger Arcane Grace nonstop to keep you alive. It will also trigger Arcane Avenger nonstop to give you 45% crit chance on your weapons. (I use this to nuke with Cedos alt fire https://overframe.gg/build/571925/cedo/xakus-best-friend/ thanks to Arcane Avenger it will have enough crit chance to proc [Hunter Munitions]. This will kill normal steelpath enemies in combination with 100% defense reduction on your 3rd.) My [Cedo] build is probably not perfect for this purpose. But it works just fine.

To make this more comfortable i put 4 tauforged red shards on [Xaku], each one giving +15 duration (160 in total) so no need for [Primed Continuity] which will open a slot for [Augur Reach] to go max range. 1 Red shard has to be +10 or +15 strengh (i have [Blind Rage] on 9 for the sake of min maxing) to have exactly 200% strengh which is needed to have 100% defense reduction on your 3rd.

You only need 1 umbra forma if you upgrade [Combat Discipline] on 1, polarize the exilus slot and use normal [Stretch] instead of [Archon Stretch] which will only give slight value if there is a [Wisp] in your squad.

I hope you enjoy :3