Hey,
Ever since Void Sphere's introduction i've wanted to try and build around it, and this time I could finally make a functioning build, thanks to Ashes of the Stars.
PoB: https://pastebin.com/ePHcp1Xk
With Anomalous Void Sphere + 30% Ashes + Boots + Belt CDR, we can get 4,62 sec cooldown on Void Sphere, using Anomalous Second Wind for a total of 3 charges.
CDR Helm enchant would give us extra -0,6 second, but i feel like this is enough and pulse frequency is better for damage , which we desperately need.
Single target gets boosted by Anomalous Tornado, another set and forget spell that doesn't need any cast speed to deal constant damage.
It's a poison build so clear is of course massively carried by Plague Bearer and Profane bloom, as usual.
Defences include some spell supression(71 on videos), determination, Taunt from Herald of Purities, molten shell, Anomalous Stone Golem regen, and Void Sphere itself is a very nice defensive layer.
My gear is not min-maxed by any means, i don't even have a watcher's eye, with some gear upgrades (more STR) i could also use Divine Flesh in for some more defense.
Cold Iron Points are good, since they give damage to both our spells, AND boost our defences as well (golem,determination, HoP, molten shell all physical spells).
Budget: i'd say my gear is not worth more than 20ex, but i started out with the Ashes, a few lvl 16 void spheres a CDR helm enchant (swapped this out later) and a CDR belt. I just leveled with EK.
Other notes: The build lacks damage for true end game, only play this build if you want to play Void Sphere and have some fun with it. Manage your expectations, Formed of Twisted invitations, Shaper, Sirus new bosses are all doable, but the Feared and Simu 30 is out of it's reach, at least in my current setup it is.
Trickster with a Noxious Strike Jewels might be a good option as well as a cluster jewel version for higher budget.
some videos:
T16: https://youtu.be/RZQu8o6ZvZU
Sirus: https://youtu.be/lMxNSh-fjI0 (not deathless :) )
Have fun!