[PFS] Questions about for Oread abilities / feats

[mechaPoet]

Hey all, back again asking for advice on builds for an Oread!

I'm looking for ways to make use of the unique Oread abilities, like Treacherous Earth:

Treacherous Earth wrote:

Once per day, an Oread with this racial trait can will the earth to rumble and shift, transforming a 10-foot-radius patch of earth, unworked stone, or sand into an area of difficult terrain, centered on an area the Oread touches. This lasts for a number of minutes equal to the oread's level, after which the ground returns to normal. This racial trait replaces the spell-like ability racial trait.

I also like the Stony Step feat chain:

Stony Step
Oread Burrower
Oread Earth Glider

Murmurs of Earth seems pretty great, too, although it requires the lackluster Echoes of Stone.

I'm just unsure what to do with this mechanically. I just know that I like the unique options available to this race, but I don't know what class(es) could make the best use of them.