This is a season 20 only build since it uses the seasonal bonus to have 2 weapon powers in Kanai's Cube. It is very good at clearing trash due to the way that Bloodtide Blade affects Blood Nova but it can struggle with single targets. I try to save Simulacrum for the Rift Guardian so that I get 3 blood novas for 10 seconds each time I cast it, which is usually enough. With the Sage's set, you get a lot of DB drops and Avarice band gives you a huge pickup radius for gold and globes which give you back a lot of Essence to fuel your novas. I typically NumLock Devour and Bone Armor and just run around casting nova, and blood rushing into packs as often as I can.