Boulder Smash on a Stone Remnant launches it far and stuns, so use it for long range initiation.

Rolling Boulder through a remnant extends the roll and stun, so roll through stones to reach enemies.

Geomagnetic Grip pulls an enemy toward you and silences them, so use it to drag carries into your team.

Magnetize spreads between enemies and refreshes near remnants, so cast it on a cluster and they all burn.

Manage your Stone Remnant count, wasting them leaves you unable to combo.

Earth Spirit has strong level 2 kill potential, so roam early with a partner.