PoE Void Sphere, Witch, Physical builds

Hello pob warriors could somebody help me improve my build? I do not really care about defensives until i cap dot dps w/o flame surge. i have about 30 div to spend but i can easily farm more if needed. mb is not mine and i have to return it to owner at end of the league so i cannot sell it. things im aware i could upgrade: recraft bow on better base with better essences and t1 dot multi recraft quiver to get any useful mods like onslaught / blind / effect of ailments / chaos res better timeless jewel and potentially impossible escape for minion instability to allocate more mods from

If you arent tired of BV occultist yet, this build will probably destroy any delve content. You have 3 curses + grace + some spell supression + regen/recoup as a base defense. EB takes care of any mana concerns. You get something like 15% of life on kill which in delve happens all the time. you destroy all corpses and jumping spiders should be insta gibbed as long as BV is up. DPS can scale very easily on no items. If you wanna go fast other movement skills are an option and plage bearer lets you dash through all content i would be running this if i hadnt played B