Much room for improvements.
Amulett +4 should be huge
Also a better weapon with spelldamage, Not Lightning.
Try to move res to corruptions on jewels and items.
A personal thing for me is the belt. I LOVE soul theter this Season, make you feel close to immortal. (Take this with a grain of Salt, I Play spark coc bm, i tried Both but for me ele weakness + mana got to many downsides
Not so sure about your gem. setup. Spellslinger for infusions should be meh…
I would go for gems at first. Those are pure upside.
Give orb of storms and thunderstorm a try?
Remove blasphemy! Cast it on Bosses yourself. You got so many aoe…
Uhtreds + rakiatas ( Not sure for your build) + snap or living bomb should be huge.
Arctic armor is huge for me. If I got Hit I proc comet in 99 % (arctic is at 1,4m hideout dps ingame) I can ( did it for fun allready for minutes in 6 man carrys) Play as cast on damage taken if I want to 😅