Medium Outsider (native, earth)?
Elemental makes good sense to me.
MOVEMENT: 9, 12 (through stone)
They have a humanoid form-two legs, two arms, and a head. In their normal state they do not possess the defined features of humanoids, such as distinctive muscles, fingers, ears, eyes, and mouths. However, grivelings that are used to dealing with or observing humans and demihumans alter their forms via a limited, yet natural, stone shape ability so they appear to have human-like facial features, digits, and clothes, mimicking the humans and demihumans they have seen. Many of the grivelings that live in the Barrier Peaks have the visages of Zurt, Summerstorm, Endoble, the First Protector, and the various guises of the Exalted One. Often the grivelings are not able to duplicate a humanoid face correctly, and the result is unusual or humorous, with eyes placed below mouths or odd-shaped ears in incorrect locations. Males and females are indistinguishable.
Because grivelings can see through rock and dirt as easily as others see through the air,
they lie in wait inside the wall of a cave or other stone or dirt structure, and move part of their body out of the structure to fight, usually surprising opponents from behind or beneath. When grivelings remain attached to a stone wall, such as the side of a cavern, their Armor Class is -1. When they separate from the wall to engage opponents in melee or if they are attached to the earth, their Armor Class is reduced to 2.
When possible, grivelings use their surroundings to the utmost advantage during combat. For example, grivelings surprising their opponents often strike during one round of combat, and then move into the stone wall the next-only to emerge the following round from a different place in an attempt to surprise their opponents again.
Grivelings also use their spell-like abilities during combat. A griveling can perform any of the following, once per day: stoneskin, transmute rock to mud, transmute mud to rock, and dig as if it were an 8th-level wizard.
Because grivelings are not affected by the climate, they are not affected by normal cold or fire attacks or cold-based spells. However, magical heat and fire spells affect them.
Further, because of their hard skins, + 1 or better weapons are needed to injure them.
They are not affected by a change in climate.
Because they have observed the occupants of the vale for so long, they have acquired the common tongue, which they speak in slow, gravely tones. In addition, they speak a smattering of mountain dwarf and their own language.
They have a humanoid form-two legs, two arms, and a head. In their normal state they do not possess the defined features of humanoids, such as distinctive muscles, fingers, ears, eyes, and mouths. However, grivelings that are used to dealing with or observing humans and demihumans alter their forms via a limited, yet natural, stone shape ability so they appear to have human-like facial features, digits, and clothes, mimicking the humans and demihumans they have seen. Many of the grivelings that live in the Barrier Peaks have the visages of Zurt, Summerstorm, Endoble, the First Protector, and the various guises of the Exalted One. Often the grivelings are not able to duplicate a humanoid face correctly, and the result is unusual or humorous, with eyes placed below mouths or odd-shaped ears in incorrect locations. Males and females are indistinguishable.