Rumbling Elemental

Rumbling Elementals were earth elementals appearing during the Elemental Unrest.

Destroying the Elemental Rift creating these will apply the Earth Powered buff which procs as Earthen Restoration, healing you for 2% of your maximum health.

Strategies
Kill up to 12 Rumbling Elementals to close the Elemental Rift that is creating them. The rift must be closed in less than ten minutes, or else it will despawn with no reward.