Intended to be paired with Umbral Flex Chimp. Light attack spam and healing for days while your twin nukes everything in sight.
Note that this build is viable for non-Grineer clear through Steel Path (absolutely wrecks Steel Path Dark Sector Infested), but if you want to kill SP Grineer with it you’ll need to swap something for [Shocking Touch] (corrosive damage armor strip). [Sacrificial Steel] is the standard choice (which turns this into TheMoon185's [Hirudo] build), but you might consider dropping [Fury] if you can reasonably slot Arcane Strike. If you’re running Umbral Flex Chimp above, you’ll definitely want to swap aura to [Corrosive Projection] for Grineer.
The ideal Riven is pretty much anything that can replace [Organ Shatter] or [Primed Reach]. Absolute perfection would probably be Crit Dmg, Crit Chance (push us over the 300% mark when BR's maxxed) and Cold for Viral status.