PoE Darkness Enthroned, Arcane builds

So, I was watching Jaamon's channel on Youtube (good Youtuber, good builds in general, recommend this guy) and he put up a pretty solid rolling magma ignite build. I worked at it a bit based off his stuff and came with this idea of using stormbind + blackflame + Eber's unification + incandescent heart. It turned out pretty well, but only in theory. Just a note, I haven't played this at all. This is not a post to say "go play this build" or "this is going to be great in 3.17". None of the build is insanely pricey. Blackflame is like 2ex. IH 6 link is probably 2 ex. Matyr is like 40c. Most of