First time theory crafting a character, and wanted to try this combination just for fun, so i spent some time on PoB trying to see if it would work out. Thought the combination of melee (mark on hit) and spell damage might be interesting, though the damage might be reduced. Shock and freeze would be fun as well. Ideally the Herald of Ice will help with the clearing of maps.

I would aim for the character to reach red maps, and so any buffs to survivability, damage, or improvements to the build in general would be great.

PoB: https://pastebin.com/nuLnDy8Q

Thanks for the help in advance.