Grenths Balance [E]
Use 2 sups, a major vigor and vitae runes + demonic flesh to cancel the health loss from the sups.
Use blood bond to help heal allies, and life siphon to steal health from enemies.
Use GFTE as e-management, you shouldnt have trouble with energy but if your life siphons get dispelled you can easily reapply them because of the e-management adrenal shouts + leadership provide.
Use Grenths balance on foes when your health goes low. If if results in your enemies health going below 50% hit them with Merciless spear for a deep wound and call the target to let team know this target is ready to die.
While not possessing any real spike damage, this is a good pressure and team support build.
Cannot really be duplicated as N/P due to rune arrangements and leadership e-management