Standard spin2win build is Primed PP, Primed Reach, Maiming Strike, Blood Rush, Berserker, Condition Overload, Drifting Contact, Organ Shatter. Need 3 forma to fit it all. It's frustrating to own Buzz Kill but not be able to fit it in there; even Organ Shatter adds more dps.
You make Condition Overload work by using Artax on your sentinel of choice, with a very specific build: all 4 dual ele/status mods, Eagle Eye, Sinister Reach, Continuous Misery, and Metal Auger (Primed Shred if you have it). If you don't want to put a forma into Artax, Shred can replace Metal Auger. With this build Artax will apply cold (guaranteed) along with corrosive and blast (counts as 2) if you're lucky. Plus the slash proc from Atterax itself, assuming anything actually survives the first hit.