He is the EdgeLord, you are not the EdgeLord, he is the EdgeLord!
I tried to put Umbral mods on Nekros, but those just not fit here... there's absolutely NO POINT. Too much disadvantage according to benefits.
This build is absolutely "purfect"!
And here it is... my Nekros with his fancy Shield of Shadows, cutting himself for your pleasure, yet not dying because he love to drink blood... lots of bloody orbs.
To make him even more "tankee" I gave him both augments, Rejuvenation Aura, and his standard equipment like Equilibrium and Health Conversion. Those mods synergies with them self so great, that even very low efficiency is not a bit of problem.
EdgeLord need exactly 214% Strength to achieve 90% damage "reduction" from his minions.
To even more synergy I gave him his best pal... Sentinel. They love each other. Why? They complement each other. Just look at his pal's build and you'll understand.
I suggest you use Arcane Grace and Arcane Pulse, both heals and this is what our EdgeLord need most.
Primary - Primary Meat Slasher
Secondary - Secondary Meat Slasher
Melee - Melee Meat Slasher (config A)
Sentinel - Primed Best Friend Forever
Sentinel Weapon - Primed Little Helper