Initially I was going to do Volcanic Fissure, but everything about Earthshatter just feels better. Still a lot of expensive upgrades to make, but for the most part the build is there, prolly play around some more, maybe the tree can be different if you get a keystone relic.

https://pobb.in/12FbcVBuH52J

PoB for anyone interested, that's my current gear from the video.