This became a key part of the build with the Jesseth weapon/shield set. Literally put one of these down every three or four seconds so you constantly have 4-8 running at all times. This rune costs life but lets your skeletons last longer, so it’s worth it for what this build is trying to achieve. The key skill for this build as this is how you get your damage multiplayers.
This will let you absorb every corpse near you automatically in order to refill your essence for skeletal mages and your command skeleton activation. Good for crowds or elite packs if Army of the Dead isn’t up. Bone Golem activation does actually do a ton of damage and stuns everything. Golem is not the biggest damage dealer, but using him with my favorite Legendary pants mean he does huge single target damage and gives you damage reduction. I used it to auto-kill pretty much every elite pack I see. The build revolves around minion damage for the most part, but the Rathma set reduces the cooldown on this and combined with crazy minion attack speed, you can have this up every 15-25 seconds instead of two minutes. Bone Spikes are better than Grim Scythe (melee range) and Siphon Blood (single target) for this build. Being able to stun anything that looks threatening instantly is nice.