S20 self-sustaining LoD Mage Necro concept

A viable solo/public game LoD Mage speed setup?

Build:
https://ptr.d3planner.com/771386249

In-Geom is great for the cooldowns, but cubing Burst of Wrath over CoE or Leoric’s might just be a meme. Thoughts?

edit: heard Reaver doesn’t proc on pet kills, cube choice changed to In-Geom.