Although Overframe is showing the Health Decay per Sec as 4.7%, it's actually only a much more reasonable 2%.

[Physique] is a weak aura but I like it; it gives just a little bit more of a buffer for [Despoil]. [Equilibrium] and [Despoil] help maintain high energy costs of abilities. [Shield Of Shadows], [Adaptation], and Gloom help keep you alive. [Primed Continuity] helps with Gloom and Shadows of the Dead ability upkeep. [Vitality] and [Primed Flow] give more of a buffer to our resources. [Blind Rage] and [Power Drift] give Shadows of the Dead and Gloom some potency.

Arcane Blessing helps with the cost of [Despoil] and Molt Reconstruct allows you to heal your Shadows of the Dead summons should you wish it. [Equilibrium] makes Arcane Energize entirely unnecessary but if you're still struggling with energy management, socket on one or two "+ Effectiveness on Energy Orbs" archon shards. One or two "+ Casting Speed" archon shards are also helpful for [Nekros] to reduce the casting time of Shadows of the Dead.