This is a full offensive run-to-the-hills version of The Apocalypse Bringer from Shay. (http://pathofpoe.com/builds/view/the-apocalypse-bringer-firestorm-witch/)
Iron Reflexes, Mind Over Matter.
More a guide for me, any feed back is welcome though. So far at lvl 45 I have good life regen. My items are not that great, but have 4 4L items which is nice. I am using three Vaal skills. Double strike for 1on1 and molten strike for aoe.