Earth Guardians can be summoned by those with the proper rituals to protect an area. To be more specific they are a part of the consciousness of an elemental chaos being. This segment of the consciousness is imbued into a collection of common earth or rock and given just enough sentience to allow the guardian to complete its assigned task. The original chaos being is aware of the theft of a portion of its mind, but they seldom can do anything about it.
Earth Guardian Lore
Arcana DC 16:
Earth guardians are summoned to protect specific areas and are almost never found outside of that area. They protect the area diligently, if with no imagination.
Arcana DC 21:
The earth guardian gains its limited sentience from an elemental chaos being. The being would be grateful for knowledge and access to who stole a part of its mind.
Arcana DC 26:
An earth guardian gains its strength from contact with the ground. Removing this contact weakens them.