My unfinished Necro KB wander with Corpse Pact, showcase of clear in a t15

Concept is to use spellslinger setups to get corpse pact stacks for free 200 attack speed (build does actually reach 100 stacks on bosses.) Sadly VD is the most efficient spell for this, so I have no idea what's happening on the screen half the time. Build is unfinished so the strong points of a Necro wander aren't as visible yet, but when it's done, it should have more survivability than your usual life based wander (block, life gain on block, almost 7k life, 3k ES) with similar clear.

I have no jewels, bad jewellery, need to get ES on gear (hoping to reach 3k), resist on gear to swap commander of darkness for essence glutton, awakened gems, a guard skill setup, more levels...

Currently it does fine in all maps, but single target and survivability against T16 bosses is not quite there without those gear upgrades. Current version cost 12 or 13ex, 7 of that is the wand. Hoping to reach its final stage with 15 more ex or so (never spent this much on a build, but I think that's not very expensive for a wander) Build did fine in jooced t16s with a 20c wand, but single target was abysmal.

https://pastebin.com/rDMKJGHa - community fork PoB with my current shitty setup.