I must have gotten lucky as I leveled with Trample/Landslide weapon+amulet essences, and Earthen Might procced alot.

It can proc on any earth magic. And Trample essence converts it to earth magic so it can proc EM potentially with every single landslide. Even the ones Trample Essence creates. (12x landslides each trample).

I leveled with petrify, and if you time it right after trampling, the second wave of trample-landslides from the landslide essence will hit the petrified mobs, doing all the extra juicy bonus DMG, usually killing everything and giving all the spirit back from killing petrified targets. That's my protip.

There's also a essence for grizzly rage that gives it bonus spirit and spirit generation while in dire bear form that's a nice temporary essence until paragon points etc.

Now I'm a Pulverize Bear Mage as I got both unique Wherebear Helm and Chest. I generate so much spirit upon mob death thanks to paragon board/points.

I still won't go into nightmare dungeons with resource burn.....and I can solo T4 ~41-50s no issue except for resource burn mobs.......eck.