WT4 Arc Lash Sorc, I make things explode so much and I don't have to worry about staying at range because my Basic is melee anyway. The amount of cc is high so I stack damage against cced targets and go for execute change to trigger the Fireball passive and watch packs of mobs just erupt into a series of explosions. It's so satisfying. I was going Pyro because I liked the big snake Ultimate visual, but I got over it when I saw the damage I was putting out.
Level on World Tier 1 the first time, the XP and gold bonuses don't equal the increased monster health so you'll level more slowly even though you get more XP
In case anyone here needs this, it's come in handy for my playthrough(s) for sure. I didn't make this, and I am not affiliated with the creator in any way, I just use it a lot and thought it might help some other folks (and also help grow Lemmy).