Keep in mind I mainly PvE. I use Dagger&Focus/Staff with an emphasis on healing and wells for support.
In sticky situations I stagger the wells as needed to keep protection up as long as possible. And I do as many heals as I can to keep party up: Reaper’s Touch/Well of Blood/life transfer/heal out of death shroud/mark of blood on staff swap etc.
I stack power, healing, and toughness as main stats
Reaper’s Touch and Well of Suffering also stack a lot of vulnerability quickly for quite a big damage boost when healing isnt needed.