[Advice] Death Mage: A Vitality Drain Essence

Hey everyone,

I’m working on my next build, a Cabalist who focuses on Drain Essence, Ravenous Earth, Curse of Frailty, and Bloody Pox to debuff and kill mobs. I found inspiration from JoV’s build (http://www.grimdawn.com/forums/showthread.php?t=63790) but added my own twist to hit the “Death Mage” theme.

Main Skills
Drain Essence
Ravenous Earth
Bloody Pox
Curse of Frailty
Mark of Torment

Passive Skills
Possession
Spectral Binding
Blood of Dreeg

Devotions
Lion
Viper
Panther
Bard’s Harp
Wendigo
Bat
Behemoth
Rattosh
Revenant
Spider
Empty Throne

Questions
I’d love some feedback on it as well as some advice regarding energy management. Is Bard’s Harp enough for energy sustain or should I get Healing Rain?

Grim Tools
https://www.grimtools.com/calc/qNYejWlN

Thanks!