Any GG build with Dark One set??

i’m trying to think about any necro+occultist build (or any other caster necro build (or maybe 2h melee) and i got the drop of this set (i have 3/4 pieces already) and is like what i want

any sugestions? any build or good idea?

ty is what I’m currently using. Not BiS greens but you get the general picture.